If you have been following this blog, you have seen me struggle to make the 208gr amax work in my rifle. I had all but written it off but I had 5 more bullets left from a box of 100 and decided, hey, what the heck, lets give it one last try. I loaded them up at .005 (JAM) at put 80gr of H1000 behind it. The next time at the range, while testing some Berger loads I finished up by shooting these into a 1.18" group at 200yards! I thought to myself, "No freaking way! This must be a fluke". But now I couldn't get it out of my head and just had to order another box to see how deep this rabbit hole goes. I am glad I did!
DISCLAIMER/WARNING FOR NEW RELOADERS: This load data should be worked up to and is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
Here is the load data:
Bullet: 208gr Amax
Primer: CCI #250
Powder: 80gr H1000
Brass: Federal GMM Full Length Resized.
COAL: 3.632 (.005 from lands)
I headed out to the range with 20 of these shiney new reloads just hoping that my previous experience wasn't a fluke!
I fired all twenty rounds alternating between two 2" orange spots @ 200 yards. This provided me with two 10 shot groups. Time between shots was between 1 and 3 minutes depending on how distracted I was with the 50BMG set up in the spot next to me and the lady on the other side of me swearing about how loud my muzzle brake was. I think we took a couple 10 minutes breaks in there for target change as well. This is to say that the barrel was all over the place heat wise but it didn't seem to affect the outcome much.
The end result was that I ended up with two 10 shot groups which were well under MOA.
The group on the left was 1.625" and the one on the right was 1.7".
Average velocity was 3010FPS. I am super happy about this. Ballistic calcs say this load is supersonic out to around 1 mile. Not sure that I need to shoot that far but still very cool to know!
Tuesday, August 25, 2015
Reloading 300 Win Mag with Berger 190gr VLD - UPDATE
In my previous post, I mentioned an article from the Berger website regarding how to get the best accuracy from a Berger VLD. I decided to give it a shot (pun intended) since I wasn't having any success with them thus far. Basically the idea is to start at the maximum COAL (cartridge overall length) also referred to as JAM (because the bullet is jammed into the lands) and work backward from there in .040" increments. Here is the link to that article: http://www.bergerbullets.com/getting-the-best-precision-and-accuracy-from-vld-bullets-in-your-rifle/
This blog covers two range sessions.
Based on the article, I loaded up 3 loads for my 300 win mag. The article shows 4 but I already had data on one of the lengths so I didn't need to do that one again. Also I deviated from the article in that instead of doing two 3 shot groups, I did one 5 shot group for each load.
DISCLAIMER/WARNING FOR NEW RELOADERS: This load data should be worked up to and is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
Here are the COALS I loaded.
Group A. 3.596 (JAM)
Group B. 3.556 (.040 JUMP)
Group C. 3.466 (.120 JUMP)
I previously had tried some loads at around 3.500 so I excluded the 3.510" load.
All loads were same minus COAL:
Bullet: Berger 190VLD
Powder: H1000 78gr
Primer: CCI #250
Brass: Full length resized federal. 300 WM
First Range Session
All groups were fired at 200 yards. I setup 3 targets and alternated shots between the 3 targets. In other words, I fired one bullet from group A at target 1, then fired 1 bullet from group B at target 2, etc. This is to ensure that there is a fair accuracy comparison between the three loads. It also rules out changes in temperature of the barrel and external conditions (weather).
Results:
Group A: 3" group Avg 2970FPS.
Group B: 1.625" group Avg 2960FPS.
Group C: 4" group Avg 2950FPS.
Notes:
Two things I noted, one which I didn't expect. The velocity went down slightly as the COAL was decreased. I expected the opposite to happen. I will have to read up on this a bit. The second was the drastic difference in accuracy between Group B & C. I was very happy with group B as it was roughly .8 MOA and a good starting point.
2nd Range Session
Working off of the best group from the previous session and with basically the same load I came up with these lengths to test:
Group A. 3.545 COAL (.051 JUMP)
Group B. 3.550 COAL (.046 JUMP)
Group C. 3.560 COAL (.036 JUMP)
Group D. 3.567 COAL (.029 JUMP)
Results:
Group A. 2.3" group (5 shots @200yards)
Group B. 1.25" group (5 shots @200yards)
Group C. 2.15" group (5 shots @200yards)
Group D. 2.0" group (5 shots @200yards)
Notes:
I am very pleased with 1.25" group at 200yards. I don't see the need for any more expirementation at this point. All that is left for me to do is "prove" the load. What I mean by this is that I need to shoot a bunch more of this load to see what the actual accuracy average is. I do this by shooting a few 10 shot groups. I find a 10 shot group is much more telling about the accuracy of a load than a 5 shot group. Several 10 shot groups provide really good proof that the load is as accurate as I claim and not just a fluke or stroke of luck.
This blog covers two range sessions.
Based on the article, I loaded up 3 loads for my 300 win mag. The article shows 4 but I already had data on one of the lengths so I didn't need to do that one again. Also I deviated from the article in that instead of doing two 3 shot groups, I did one 5 shot group for each load.
DISCLAIMER/WARNING FOR NEW RELOADERS: This load data should be worked up to and is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
Here are the COALS I loaded.
Group A. 3.596 (JAM)
Group B. 3.556 (.040 JUMP)
Group C. 3.466 (.120 JUMP)
I previously had tried some loads at around 3.500 so I excluded the 3.510" load.
All loads were same minus COAL:
Bullet: Berger 190VLD
Powder: H1000 78gr
Primer: CCI #250
Brass: Full length resized federal. 300 WM
First Range Session
All groups were fired at 200 yards. I setup 3 targets and alternated shots between the 3 targets. In other words, I fired one bullet from group A at target 1, then fired 1 bullet from group B at target 2, etc. This is to ensure that there is a fair accuracy comparison between the three loads. It also rules out changes in temperature of the barrel and external conditions (weather).
Results:
Group A: 3" group Avg 2970FPS.
Group B: 1.625" group Avg 2960FPS.
Group C: 4" group Avg 2950FPS.
Notes:
Two things I noted, one which I didn't expect. The velocity went down slightly as the COAL was decreased. I expected the opposite to happen. I will have to read up on this a bit. The second was the drastic difference in accuracy between Group B & C. I was very happy with group B as it was roughly .8 MOA and a good starting point.
2nd Range Session
Working off of the best group from the previous session and with basically the same load I came up with these lengths to test:
Group A. 3.545 COAL (.051 JUMP)
Group B. 3.550 COAL (.046 JUMP)
Group C. 3.560 COAL (.036 JUMP)
Group D. 3.567 COAL (.029 JUMP)
Results:
Group A. 2.3" group (5 shots @200yards)
Group B. 1.25" group (5 shots @200yards)
Group C. 2.15" group (5 shots @200yards)
Group D. 2.0" group (5 shots @200yards)
Notes:
I am very pleased with 1.25" group at 200yards. I don't see the need for any more expirementation at this point. All that is left for me to do is "prove" the load. What I mean by this is that I need to shoot a bunch more of this load to see what the actual accuracy average is. I do this by shooting a few 10 shot groups. I find a 10 shot group is much more telling about the accuracy of a load than a 5 shot group. Several 10 shot groups provide really good proof that the load is as accurate as I claim and not just a fluke or stroke of luck.
Monday, August 10, 2015
Amax 208, Berger 190VLD and Sierra 175TMK another day of reloading
I am going to skip the long story this time and just give the details and results of each load. For those who havn't read previous posts, these were shot using a Savage 110FCP 300 Win Mag
Hornady 208gr AMAX
Bullet: 208gr Amax
Brass: PPU full length resized
Powder: H1000 - 78gr & 79gr
Primer: CCI #250
COAL: 3.605 & 3.485
I only loaded 5 rounds of each this time since that was the last of my 208gr amax. My results in the past have been dismal at best so just wanted to finish them off and maybe get one last stab at success. I had tried two different charges at the longer COAL and they actually performed well.
Results
My first group was with the 3.605 COAL and 78gr charge. @200 yards this grouped at 2.25 inches. Not terrible but not great either. My next group was with the same length but increase in powder charge to 79gr. This time my 200yd group was exactly 2" with a mean radius of .685". This is actually pretty good. The other thing I noticed is that the group tighted up considerably with the increase in velocity. There was a little sign of cratering on the primer but I think I could push this load a bit more and maybe tighten the groups even further. Unfortunantly I only have 5 bullets left of the 208gr amax. I guess I may have to order some more.
190gr Berger VLD
Bullet: 190gr Berger VLD
Brass: PPU full length resized
Powder: H1000 - 78gr
Primer: CCI #250
COAL: 3.580 & 3.495
Results
I loaded these to have a jump of .017. I wanted to see if I could get a bit more consistency out of these loads. I loaded 15 rounds again and shot 3 groups of 5. My best group @200yds was 2.25". Actually I shot 2 groups which were 2.25 and a third which was 2.85". I had plenty of time and was waiting 3-4 minutes between shots to allow for barrel cooling. Conditions were great and temps were in mid 80's. I am a little depressed with these bullets so far but came across this article from Berger which gives me hope. Getting the Best Accuracy from VLD .
Quote from that Article:
I am going to give this a try and post my results in a few weeks (hopefully). But hunting season is coming on and I probably won't do much shooting during this time.Trying to find the COAL that puts you in the sweet spot by moving .002 to .010 will take so long the barrel may be worn out by the time you sort it out if you don’t give up first. Since the sweet spot is .030 to .040 wide we recommend that you conduct the following test to find your rifles VLD sweet spot.Load 24 rounds at the following COAL if you are a target competition shooter who does not worry about jamming a bullet:
1. .010 into (touching) the lands (jam) 6 rounds
2. .040 off the lands (jump) 6 rounds
3. .080 off the lands (jump) 6 rounds
4. .120 off the lands (jump) 6 roundsLoad 24 rounds at the following COAL if you are a hunter (pulling a bullet out of the case with your rifling while in the field can be a hunt ending event which must be avoided) or a competition shooter who worries about pulling a bullet during a match:
1. .010 off the lands (jump) 6 rounds
2. .050 off the lands (jump) 6 rounds
3. .090 off the lands (jump) 6 rounds
4. .130 off the lands (jump) 6 rounds
Best Group of Day
Bullet: 175gr Sierra TMKBrass: PPU full length resized
Powder: IMR 4350 - 72gr
Primer: CCI #250
COAL: 3.495
This rifle seems to love the lighter bullets like the 155 and the 175 MatchKing. This load has worked pretty well in my rifle and I would love to find a heavier load which groups like this!
I only loaded 5 of these and it was the very last group I fired for the day. The group @ 200yds was 1.25".
Tuesday, August 4, 2015
Federal Gold Medal 190gr SMK 300 Win Mag in Savage 110 FCP
This last weekend I decided to try some different loads including a factory loaded box of Federal Gold Medal Match 190GR SMK. My chronograph wasn't working correctly (maybe finally time for that MagnetoSpeed chrono! (http://www.magnetospeed.com)) so no FPS data this time.
I started with the federal match ammo and right out of the gate things looked good! My first 5 shot group measured .650 center to center. The next 15 proved to be very similar although each group was consecutively larger. I noticed that as the barrel gun heated up, the groups elongated vertically. After burning up that $52 box of ammo, I decided to try some new reloads out at the 200 yard range.
Federal 190gr GMM @ 100yds 5 shot group .650" |
I had loaded up some more of the 175gr Sierra TMK and wanted to try those with a different powder. I had some success with the Superformance in the past but decided to try some H4350 this time.
I was using full length resized PPU brass with CCI 250 mag primers with a 73gr powder charge and overall length of 3.6". I estimated velocity on these around 3100FPS.
My first 5 shots at 200 yards measured just over 1.8". Not terrible but I think had I waited longer in between shots this group may have been even tighter.
It was a hot day 104F and the barrel seemed to heat up quickly and cool down slowly. Again my next groups begin to string vertically, almost predictably such that I could aim lower each shot and get them to land in the same place. I wasn't really waiting in between shots and was probably firing about a round every 20-30 seconds.
My gun seems to like this 175gr TMK so I plan on doing a lot more experimentation with this load in the future.
I also shot some 2" groups at 200yd with 190gr VLD bergers with 75gr H1000. This was with the hot barrel too. So next time around will be trying that load with cold bore to see what we can do.
Saturday, July 18, 2015
300 Win Mag Reloading with Superformance and 175gr Sierra TMK (tipped match king)
DISCLAIMER/WARNING FOR NEW RELOADERS: Any load data in this article is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
I finally received a box of 175 TMK direct from Sierra and couldn't wait to do some more experimentation in my 300 win mag. I know these were mostly made to be a 308 match bullet but I figured the 300wm might like it just as well. If you have been following this blog, I bought a Savage 110 FCP in 300 Win mag and have experimenting to find a good load for this rifle. I have more than 10lbs of Superformance on hand and have been trying to see if I can come up with a long range load using it. There is little load data on the Superformance still and I think a lot of people are afraid to experiment with reloading. I have yet to use magnum primers with the superformance but those experiments will be coming soon as well. For now, i have been using CCI #34 and CCI 200 primers. I switched from the #34 to the 200's because I think the #34s tend to hide the early signs of overpressure. For example, I was seeing ejector marks before I was seeing primer cratering or flattening. This is because the 34 is a much harder primer designed for Semi-autos. I digress.
After determining my max OAL for this cartridge which wsa 3.612 (on the lands), I decided to start with some longer bullets and some max "magazine" length loads (the longest load that fits in my magazine.
RANGE REPORT
The following were shot in 5rd groups at 100yds.
COAL | POWERCHARGE | AVG FPS | AVG GROUP SIZE |
3.595 | 74gr | 3120 | .937" |
3.575 | 74gr | 3100 | 1.25" |
3.500 | 74gr | 3090 | 1.25" |
3.500 | 75gr | 3115 | .625" |
These bullets seem to have a lot of potential in the rifle. I only loaded 5rds of each so the data is really only a starting point. One thing I noticed is that really all loads worked well. The speed was consistent and I believe the rifle cooling in between groups is why we didn't see much change between the 74gr load and the 75gr.
I was happy to finally have an accurate load which actually fits in the magazine. These TMKs have a sufficiently high BC at .545 and I believe I could load these quite a bit hotter. I would actually like to see how these do around 3200fps. According to the Hodgdon Ballistic Calculator at 3200fps we would see a ballistic chart like the following:
The chart doesn't differ much if you input 3100fps as velocity. At 1500 yards, the velocity is 1128 vs 1164. I really don't plan on shooting much past 1000 yards with this rifle so really this is quite good. The next step for me is to load up a bunch and shoot some 10 and 20rd groups to see if this is really the load I want to settle in on.
More to come!
300 Win Mag - Superformance - 208gr Amax - Playing with C.O.A.L (cartridge overall length)
Playing with case overall length
DISCLAIMER/WARNING FOR NEW RELOADERS: Any load data in this article is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
DISCLAIMER/WARNING FOR NEW RELOADERS: Any load data in this article is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
If you find you are exerting a lot of effort, you probably made the mistake of using a resized case (resized neck is tighter) or you forgot to lube the inside the neck.
Another approach you can use is to just seat the bullet in a resized (unprimed) case and try to close it in your rifle. If there is any resistance, seat the bullet a little lower and try again. Keep going until you are able to close the bolt on the cartridge will little or no resistance. This should be close to your max overall length.
The first method will put you just over the max oal (lands tend to dig into the bullet and you definitely don't want to load at this length). I usually back off this .010 and then color the bullet with a dark sharpee (see picture right) and put it in the gun again to see if it makes marks on the bullet ogive.
If it does, I back it off another .010 and try again. I generally repeat this process until I can close the bolt on a cartridge without leaving marks on the bullet ogive. For my Savage 110 FCP, this measurement was 3.635". I then back off another .010 and use that as my starting COAL. My max COAL I record at 3.640 which is the length where this bullet would be lightly touching the lands. I always record this info in my reloading notebook since this process is a pain to repeat.
If it does, I back it off another .010 and try again. I generally repeat this process until I can close the bolt on a cartridge without leaving marks on the bullet ogive. For my Savage 110 FCP, this measurement was 3.635". I then back off another .010 and use that as my starting COAL. My max COAL I record at 3.640 which is the length where this bullet would be lightly touching the lands. I always record this info in my reloading notebook since this process is a pain to repeat.
I loaded 10rds at 3.625 which is way over my magazine length (3.510). I wanted to try a light load and a heavy load so I used my min (66gr) and max (72gr) from my previous test results. I expected that the velocities would be lower since I was seating the bullets out quite a bit (creating more capacity).
Next I wanted to load to the max length that would reliably work in my magazine. I again made 10 rds at min and max powder charges using the COAL of 3.500.
RANGE REPORT
Things started off a bit rough as I my first 10 shots proved to be a WTF load. This is to say that groups were just over 4". Here is the data.
PPU 3x fired brass neck size only, Superformance, CCI #200, 208gr AMAX
5 shot groups fired at 100 yards
Things started off a bit rough as I my first 10 shots proved to be a WTF load. This is to say that groups were just over 4". Here is the data.
PPU 3x fired brass neck size only, Superformance, CCI #200, 208gr AMAX
5 shot groups fired at 100 yards
COAL | POWERCHARGE | AVG FPS | AVG GROUP SIZE |
3.500 | 70gr | 2800 | 4" |
3.500 | 66gr | 2550 | 2.25" |
3.500 | 68gr | 2700 | 2.15" |
3.600 | 70gr | 2905 | 1.5" |
3.615 | 70gr | 2750 | 2.25" |
3.615 | 71.5gr | 2850 | 1" |
In summary, the trend I noticed was that as I increased the OAL , accuaracy seemed to get better however, if velocity was not above 2800, accuracy was degraded. The best load which was with 3.615" COAL and 71.5gr Superformance showed a little sign of over pressure. There was some slight cratering on the primers on about 3 out of 10 shots.
Here is a picture of those 3. You will notice a little cratering on the primer strike and some light circles on the "300" from the ejector.
For now I am done playing with this bullet powder combination. I didn't seem to have much success without overpressure. The 208gr amax seems to do better around the 2900 - 3000fps mark and I just can't get there safely with superformance. I have had great results with superformance and 155s and 175s however and you can read about that in my other blog posts.
Here is a picture of those 3. You will notice a little cratering on the primer strike and some light circles on the "300" from the ejector.
For now I am done playing with this bullet powder combination. I didn't seem to have much success without overpressure. The 208gr amax seems to do better around the 2900 - 3000fps mark and I just can't get there safely with superformance. I have had great results with superformance and 155s and 175s however and you can read about that in my other blog posts.
Friday, July 3, 2015
Experiments with 300 win mag and Superformance - 168gr amax & 155gr SIE HPBT
DISCLAIMER/WARNING FOR NEW RELOADERS: Any load data in this article is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
I decided to give the 208gr amax a break for a weekend and try something different. I have a bunch of 30cal bullets on hand which I reload mostly for 308 and 30.06 and thought I would give some a try. I decided to do some minimal loads and see what velocities I got.
Again because superformance has a similar burn rate to Winchester Supreme 780 and I had load data for that powder (courtesy of Hodgdon Reloading Center) and used the minimum charge as the starting point.
I tried two loads this time out. The first was with Sierra 155 MK HPBT.
I used 75gr of Superformance which according to the load data I had, should generate velocities between 2900 - 3000fps. Again I used PPU brass and CCI #34 primers. This was the second time reloading these cases and they were neck sized only.
The second load was 168gr Amax with 72gr of Superformance, PPU twice fired brass and CCI#34.
At the range I started with the 155gr first and was completely shocked at how far off my estimates were.
Here is the data.
155GR SIE HPBT #34 CCI PPU BRASS 75GR SUPERFORMANCE
Shots #1-10
1. 3170
2. 3193
3. 3131
4. 3200
5. 3210
6. 3197
7. 3217
8. 3187
9. 3238
10. 3215
So after firing the first shot, and looking at the Chrony, I thought either I made a huge mistake or the Chrony was broke. I checked the brass and there was no sign of over pressure. I continued on. The group sizes for the first two 5 round groups were .9" and .7". Now that's what I am talking about!
The next 10 produced a range of velocities between 3177 - 3211. Again great groups under 1". This was actually a total surprise because I was pretty sure that the 155SMK wasn't really made for that kind of velocity.
Next up was the 168gr AMAX. Here is the data:
168gr AMAX #34 CCI PPU BRASE 72GR SUPERFORMANCE
Shots #1-10
1. 3200
2. 3192
3. 3183
4. 3194
5. 3183
6. 3184
7. 3167
8. 3193
9. 3192
10. 3179
Again, wow.. I was expecting to be around 2800FPS but this is crazy. 3200 was way hotter than I expected. Again, the brass looked great, primers were in good shape, no signs of over pressure. The only downer was that the groups sizes were 1.8" - 2". My rifle hated this load but I may tune it up or down a bit to see if I can get something to group. I have a box of SMK 175 TMK coming soon so looking forward to putting those down range with superformance as well. So far in my rifle, this stuff is turning out to be a super powder for 300 win mag (well at least in terms of velocity).
More to come!
I decided to give the 208gr amax a break for a weekend and try something different. I have a bunch of 30cal bullets on hand which I reload mostly for 308 and 30.06 and thought I would give some a try. I decided to do some minimal loads and see what velocities I got.
Again because superformance has a similar burn rate to Winchester Supreme 780 and I had load data for that powder (courtesy of Hodgdon Reloading Center) and used the minimum charge as the starting point.
I tried two loads this time out. The first was with Sierra 155 MK HPBT.
I used 75gr of Superformance which according to the load data I had, should generate velocities between 2900 - 3000fps. Again I used PPU brass and CCI #34 primers. This was the second time reloading these cases and they were neck sized only.
The second load was 168gr Amax with 72gr of Superformance, PPU twice fired brass and CCI#34.
At the range I started with the 155gr first and was completely shocked at how far off my estimates were.
Here is the data.
155GR SIE HPBT #34 CCI PPU BRASS 75GR SUPERFORMANCE
Shots #1-10
1. 3170
2. 3193
3. 3131
4. 3200
5. 3210
6. 3197
7. 3217
8. 3187
9. 3238
10. 3215
So after firing the first shot, and looking at the Chrony, I thought either I made a huge mistake or the Chrony was broke. I checked the brass and there was no sign of over pressure. I continued on. The group sizes for the first two 5 round groups were .9" and .7". Now that's what I am talking about!
The next 10 produced a range of velocities between 3177 - 3211. Again great groups under 1". This was actually a total surprise because I was pretty sure that the 155SMK wasn't really made for that kind of velocity.
Next up was the 168gr AMAX. Here is the data:
168gr AMAX #34 CCI PPU BRASE 72GR SUPERFORMANCE
Shots #1-10
1. 3200
2. 3192
3. 3183
4. 3194
5. 3183
6. 3184
7. 3167
8. 3193
9. 3192
10. 3179
Again, wow.. I was expecting to be around 2800FPS but this is crazy. 3200 was way hotter than I expected. Again, the brass looked great, primers were in good shape, no signs of over pressure. The only downer was that the groups sizes were 1.8" - 2". My rifle hated this load but I may tune it up or down a bit to see if I can get something to group. I have a box of SMK 175 TMK coming soon so looking forward to putting those down range with superformance as well. So far in my rifle, this stuff is turning out to be a super powder for 300 win mag (well at least in terms of velocity).
More to come!
Friday, June 26, 2015
300 Win Mag with 208gr Amax & Superformance powder. Session Two
I put a cheek rest on my rifle this week as I felt that maybe some of the accuracy issues were related to my cheek weld and some sort of paralax effect. My scope has a paralax adjustment and it was set correctly so I am pretty sure it wasn't the problem but the cheek rest is nice anyhow.
I got one from Matthews Fabrication (http://matthewsfabrication.com/product/adjustable-kydex-cheek-rest-matthews-sleek-rest/) for around $40. It took about 10 minutes to install and works really well. You may notice in this picture that the muzzle brake is missing. More on that later!
DISCLAIMER/WARNING FOR NEW RELOADERS: Any load data in this article is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
From my last range session, I determined that I wanted to try a bigger batch of loads using 70gr of Superformance Powder. This should yield velocity at around 2800FPS with the 208gr AMAX. This is good enough for 1000 yards and more.
I arrived at the range early in the morning (8am is early for me) and the weather was perfect at 80 degrees no wind. This was to be a hot day so I wanted to get my shooting done early.
I ran my first 5 shots over the chrony and here are the readings:
1. 2754 fps (cold bore)
2. 2827 fps
3. 2816 fps
4. 2803 fps
5. 2818 fps
Almost exactly where I wanted to be. I was a bit surprised on the huge jump between the cold bore shot and all the others. The first group was around 1.5" which is much better than before but still not where I want to be. There was no flattening, cratering or signs of over-pressure otherwise. This seemed like a viable load if only it groups a bit better.
My next 5 shots were as follows:
6. 2806
7. 2803
8. 2842
9. 2846
10. 2814
I had a cluster of 3 together at about 1/2 inch and then 2 right on top of each other about 1" away for a total 5 shot group of about 2in. Not great but interesting as the rounds matched up with the velocities almost exactly. shots 8 & 9 were the two that were together. I am going to play around with this load a bit more in the future and be more precise. These loads were sort of slapped together.
At this point, I took off the muzzle break as I wondered how it might affect the accuracy and speed of this load. The next 10 shots were much more consistent in velocity but not any more accurate.
Shots 11-20 ranged between 2809 - 2817 and were very consistent however I was still not able to produce better than 1.5" groups at 100 yards. Its still a new barrel so I probably need to give it more time and a good proper cleaning. More to report later! All I know is that the muzzle brake is your shoulders best friend.
Friday, June 19, 2015
Reloading 300 Win Mag with Hornady 208gr AMAX and SUPERFORMANCE Powder
Ok, so many reloaders will tell you to stick to the book if you don't want to blow yourself up. I don't want to blow myself up, but I always question everything. About a year ago, I bought 10lbs or more of Superformance powder. I wanted to try it out for 308, 243 and 30.06. It didn't seem to give me any great boost over what I was already using (except the 30.06 but accuracy was crap) so I put it away. I was looking through the load data I had for 300wm and realized that I would probably have to buy some more h1000 or Retumbo to load for this round. After spending about an hour on the internet looking for these powders in stock, I decided to see if something I had could work.
Varget seemed like it might work for the lighter bullets but definitely too fast for the 208gr. It was then that I decided to look up the burn rates for superformance and was pleasantly surprised to find out it was right in between Winchester Surpreme 780 and H4831. These powders also were sort of middle-of-the-range in the Hodgdon Reloading Center so I thought I would give it a try. According to the data I found, Supreme 780 was the same or slightly faster burn rate than Superformance. I decided to start at the bottom of the range and load 5rds for each 1 grain increase. I started at 67gr and ended at 73 grains. I went with the Hodgdon COL which was 3.420" .
Regarding primers, I only had 20 mag primers left so decided to bench them and use CCI #34 for now. I had many others in my stock but those were already loaded up in my priming tool from my last 308 session and I am lazy.
Back at the range, I setup my Chrony which is a Beta Master and prepared to blow up my rifle with this undocumented load.
DISCLAIMER/WARNING FOR NEW RELOADERS: Any load data in this article is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
300 Win Mag, 208gr Hornady Amax, PPU once fired neck sized brass with CCI #34 primer. COL 3.420
Superformance:
67gr : STD = 14, Average 2734FPS, LOW=2720FPS, HIGH = 2753FPS
68gr : STD = 11, Average 2766FPS, LOW=2750FPS, HIGH = 2780FPS
69gr : STD = 15, Average 2813FPS, LOW=2790FPS, HIGH = 2834FPS
70gr : STD = 2, Average 2836FPS, LOW=2834FPS, HIGH = 2838FPS
71gr : STD = 7, Average 2917FPS, LOW=2910FPS, HIGH = 2929FPS
72gr : STD = 10, Average 2973FPS, LOW=2955FPS, HIGH = 2973FPS
73gr : STD = ND, Average ND, LOW=ND, HIGH = ND
Things started of great! I was surprised that my starting point was pushing those big pills at over 2700. My target velocity was 2800 so I wouldn't have far to go. There was absolutely no signs of over pressure whatsoever. Accuracy was not great however. She was grouping around 2" @ 100 yards. I was taking about 5 minutes between each set of 5. I probably got the barrel hotter than I should have as I was in a bit of a hurry towards the end.
I started to see signs of pressure at 72gr. The primers were starting to flatten just a bit and you could see the faint markings of the ejector on the brass face. Still no bulging, cratering or sticky bolt so I thought I would press on. The gun was very hot at this point and I felt if I let it cool down, I might be way over pressure for the 73gr load. At this point I believe something went wrong with my chrony as I couldn't get a reading on the next 5. My guess is that they would have been around 3000fps but this was hotter than I wanted or needed. Still no sticky bolt or popped primers and cases looked fine. Just a bit of flattening on the primers and light ejector marks.
I had gotten the data I needed and headed home to clean the gun and inspect the cases & primers more closely before reloading them. Based on the data, I think I am going to try a bigger batch of the 70gr load. Still not sure what these would do with magnum primers but at this point, I really don't need them!
Varget seemed like it might work for the lighter bullets but definitely too fast for the 208gr. It was then that I decided to look up the burn rates for superformance and was pleasantly surprised to find out it was right in between Winchester Surpreme 780 and H4831. These powders also were sort of middle-of-the-range in the Hodgdon Reloading Center so I thought I would give it a try. According to the data I found, Supreme 780 was the same or slightly faster burn rate than Superformance. I decided to start at the bottom of the range and load 5rds for each 1 grain increase. I started at 67gr and ended at 73 grains. I went with the Hodgdon COL which was 3.420" .
Regarding primers, I only had 20 mag primers left so decided to bench them and use CCI #34 for now. I had many others in my stock but those were already loaded up in my priming tool from my last 308 session and I am lazy.
Back at the range, I setup my Chrony which is a Beta Master and prepared to blow up my rifle with this undocumented load.
DISCLAIMER/WARNING FOR NEW RELOADERS: Any load data in this article is for ONE particular rifle (mine). If you try this load in your gun, it may not feed and worse, it may feed but blow up your rifle causing injury or death. Be very carefull when extending your Cartridge Length over the reloading book published values as there can be dangerously huge increases in pressure.
300 Win Mag, 208gr Hornady Amax, PPU once fired neck sized brass with CCI #34 primer. COL 3.420
Superformance:
67gr : STD = 14, Average 2734FPS, LOW=2720FPS, HIGH = 2753FPS
68gr : STD = 11, Average 2766FPS, LOW=2750FPS, HIGH = 2780FPS
69gr : STD = 15, Average 2813FPS, LOW=2790FPS, HIGH = 2834FPS
70gr : STD = 2, Average 2836FPS, LOW=2834FPS, HIGH = 2838FPS
71gr : STD = 7, Average 2917FPS, LOW=2910FPS, HIGH = 2929FPS
72gr : STD = 10, Average 2973FPS, LOW=2955FPS, HIGH = 2973FPS
73gr : STD = ND, Average ND, LOW=ND, HIGH = ND
Things started of great! I was surprised that my starting point was pushing those big pills at over 2700. My target velocity was 2800 so I wouldn't have far to go. There was absolutely no signs of over pressure whatsoever. Accuracy was not great however. She was grouping around 2" @ 100 yards. I was taking about 5 minutes between each set of 5. I probably got the barrel hotter than I should have as I was in a bit of a hurry towards the end.
I started to see signs of pressure at 72gr. The primers were starting to flatten just a bit and you could see the faint markings of the ejector on the brass face. Still no bulging, cratering or sticky bolt so I thought I would press on. The gun was very hot at this point and I felt if I let it cool down, I might be way over pressure for the 73gr load. At this point I believe something went wrong with my chrony as I couldn't get a reading on the next 5. My guess is that they would have been around 3000fps but this was hotter than I wanted or needed. Still no sticky bolt or popped primers and cases looked fine. Just a bit of flattening on the primers and light ejector marks.
I had gotten the data I needed and headed home to clean the gun and inspect the cases & primers more closely before reloading them. Based on the data, I think I am going to try a bigger batch of the 70gr load. Still not sure what these would do with magnum primers but at this point, I really don't need them!
Wednesday, April 15, 2015
New 300 Win Mag Rifle - Savage 110 FCP
I picked up this rifle on gunbroker a while back for around 900 bucks. It said it was new in box but it obviously had at least 40rds through it and the brake is aftermarket so I guess they meant it is "fairly new, in a box". It already had the 20moa rail and clamp on brake so it seemed like a good deal anyway so I kept it. Finally I had some time and money to put a scope on it so I thought it would be good to get/make some ammo for it so I can shoot it!
Since this is my first rifle in 300 win mag, I had to buy all the reloading gear as well. I decided that I will just try neck sizing at first so I just bought a rcbs set with neck size and seating dies. Generally I just use the large Lee cutter with lee case gauge as it only runs about $6 bucks for the gauge and shell plate if you already have the cutter. If you have to buy the whole thing, its probably around $15. So the reloading equip ran me an extra $40 bucks but I still needed to get some brass to reload. I have always had good luck with Partizan PPU and I knew they made it for 300wm so i decided to pick up a few boxes of that for starts. I found some 165gr for about $18 a box online so I bought 3 boxes to start.
I put this Zeiss HD5 5x25 scope on the rifle which is pretty good glass and is made to stand up to the magnum rounds. The reticle is really made for a 308 so I may switch it out with the scope on my r700 later on. After cleaning the rifle, torquing down all the screws to the recommended weights, I was off to the range to "make some brass".
I had read some good reviews on the 165gr PPU so I had high hopes for the factory ammo. Unfortunantly after firing 20rds, it was clear to me that I was going to need to reload if i had any hopes of accuracy. Sure, the gun is new and not broken in yet, but I was seeing 3" - 4" groups at 100 yards. As an fairly experienced shooter I was pretty sure it wasn't me. The groups were also moving which was quite concerning as well. Still it was too early to judge on this rifle so I blasted away the 60 rounds I bought and got the barrel real hot. I did run a patch or two through after every box but I am not from camp that believes you should clean a new gun after every few shots for the break in period.
The brake on the gun made shooting these rounds almost a pleasure. In fact other than the noise, this thing felt like less recoil than any of my 308's. The brake is is a clamp-on brake from Witt Machine http://wittmachine.co. Real nice peice of work. All in all, this gun is a lot of fun to shoot but I need to work on the accuracy part. Hopefully it gets better as it breaks in. Also noted that I am going to have to put a cheek rest on it so I can get a consistent weld. More on that later.
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