Sunday I got out to test 5 loads to try and find the accuracy nodes In the 24" 7mm Valkyrie AR barrel. The day was cool and over cast. Temp was 60 but it felt like it was in the low 50's with the 15-25 mph winds from my 7-8 o'clock.
Todays tests were also going to include cycling tests with the faster powders like h335 and imr 8208. I have been slowly opening up the port. It is at .093 now which is larger than I figured we would need but i wasn't getting bolt lock back and not all rounds were being picked up with aa2230,h335 and 8208 at the .089 port size. Well those problems are fixed now. The gun cycles perfect with 3-4 o'clock ejection with both h335 and 8208 didn't run 2230 today.
Good news is all loads tested had an accuracy node at .8 moa or better with the nosler 140 BT coming in at best with a .398 moa group at 100 yards a second was .409 moa. The 160 federal fusions i did 5 shot groups the rest were 3 shot groups. The 160's came in with a best of
Todays tests were also going to include cycling tests with the faster powders like h335 and imr 8208. I have been slowly opening up the port. It is at .093 now which is larger than I figured we would need but i wasn't getting bolt lock back and not all rounds were being picked up with aa2230,h335 and 8208 at the .089 port size. Well those problems are fixed now. The gun cycles perfect with 3-4 o'clock ejection with both h335 and 8208 didn't run 2230 today.
Good news is all loads tested had an accuracy node at .8 moa or better with the nosler 140 BT coming in at best with a .398 moa group at 100 yards a second was .409 moa. The 160 federal fusions i did 5 shot groups the rest were 3 shot groups. The 160's came in with a best of
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