This is just a preliminary report on the 338LM produced by Mike at Southwest Ammo (A sponsor vendor here on the Hide).
Disclaimer: I am not in anyway related, or a partner of the business. I asked Mike if I could test his 338LM ammo in my rifle. He was gracious enough to let me test his ammo.
Rifle info: AIAWSM 338 LM, 27" bareel, 1:11" twist rate.
Condition: Temp= 84 degrees, Hum=20%, Baro= 27.88, Altitude=2000, DA=4100. These info were obtained from my Kestrel 4000. Bright and warm on a standard day here in the AZ desert. (Sorry folks from the North and back East).
Chronograph data were done using a CED M2 set at 10 feet from muzzle brake.
Ammo used:
300 scenars, Jamison brass, OAL at 3.600"
Velocity High= 2722 fps, Low=2694 fps, Avg=2712 fps, ES=28. 5 shots average.
** Observed that my bolt was a bit sticky. On a couple shots, I had to give it a decent pull to get the bolt open. (Thanks for the bombproof build of an AIAWSM).
235 Solid projos from Dynamic Research, Jamison brass, 3.600" OAL. These were 5 shots average.
Velocity High=2974 fps, Low=2962 fps, Avg=2968 fps, ES=12
Results: The 300 scenar group was a bit larger than the solid projo group. Both were sub MOA. I think the 300 scenar is a bit heavy for my rifle, although I have used the 300 SMK good out to 1 mile before. However, the same observation was made when I compared the 300 SMK vs. 250 scenars, the scenar goup won everytime. Perhaps, at 100 yards, the 300 SMK has had the time to stabilize yet. With respect to the 235 solid projo, the first three shoots measured 0.664" from edge to edge. I pulled the last two rounds. Due to limited supply of ammo, I shot these groups through the chrono while obtaining for velocity. Definitely didn't want to shoot my chrono.
Conclusion: Both ammo are certainly subMOA. For those who have at least 1:10" twist, and don't reload, the 300 grain pill is the way to go. Certainly for the price? You can't beat what Mike offers. The solid projos has definitely sparkled my interest. I would like to experiment with this a bit more. With an advertised BC of 0.82, I am sure that it will go a long way.
Bottom line, if you are not a handloader, and want good match grade ammo at a decent price, I would not hesitate to pick up ammo from Mike of Southwest Ammo. You won't regret it.
Will try to test these ammo at 1K and beyond. I have special interest in the solid projos to see how it does at 2K+.
Disclaimer: I am not in anyway related, or a partner of the business. I asked Mike if I could test his 338LM ammo in my rifle. He was gracious enough to let me test his ammo.
Rifle info: AIAWSM 338 LM, 27" bareel, 1:11" twist rate.
Condition: Temp= 84 degrees, Hum=20%, Baro= 27.88, Altitude=2000, DA=4100. These info were obtained from my Kestrel 4000. Bright and warm on a standard day here in the AZ desert. (Sorry folks from the North and back East).
Chronograph data were done using a CED M2 set at 10 feet from muzzle brake.
Ammo used:
300 scenars, Jamison brass, OAL at 3.600"
Velocity High= 2722 fps, Low=2694 fps, Avg=2712 fps, ES=28. 5 shots average.
** Observed that my bolt was a bit sticky. On a couple shots, I had to give it a decent pull to get the bolt open. (Thanks for the bombproof build of an AIAWSM).
235 Solid projos from Dynamic Research, Jamison brass, 3.600" OAL. These were 5 shots average.
Velocity High=2974 fps, Low=2962 fps, Avg=2968 fps, ES=12
Results: The 300 scenar group was a bit larger than the solid projo group. Both were sub MOA. I think the 300 scenar is a bit heavy for my rifle, although I have used the 300 SMK good out to 1 mile before. However, the same observation was made when I compared the 300 SMK vs. 250 scenars, the scenar goup won everytime. Perhaps, at 100 yards, the 300 SMK has had the time to stabilize yet. With respect to the 235 solid projo, the first three shoots measured 0.664" from edge to edge. I pulled the last two rounds. Due to limited supply of ammo, I shot these groups through the chrono while obtaining for velocity. Definitely didn't want to shoot my chrono.
Conclusion: Both ammo are certainly subMOA. For those who have at least 1:10" twist, and don't reload, the 300 grain pill is the way to go. Certainly for the price? You can't beat what Mike offers. The solid projos has definitely sparkled my interest. I would like to experiment with this a bit more. With an advertised BC of 0.82, I am sure that it will go a long way.
Bottom line, if you are not a handloader, and want good match grade ammo at a decent price, I would not hesitate to pick up ammo from Mike of Southwest Ammo. You won't regret it.
Will try to test these ammo at 1K and beyond. I have special interest in the solid projos to see how it does at 2K+.
