04-26-2015, 02:38 AM
gjpollman Wrote:The setup is 20" w/ rifle length gas and a JP silent capture buffer (rifle buffer on a PRS stock) I have dialed down the gas block to the min setting for functioning but I have been looking at changing out the spring to a heavier option and see what that does to slow things down. I do understand 28.5gr is on the limit and I did work up to it, I did loads from 28.5 down to 27.7 and like mentioned in this thread the 28.5 was the most accurate. Other than the belting and a handful splitting there were no pressure signatures on the primers at all which is why I found the case issues odd, I haven't seen that happen to brass without issues on the primers too.
Did you ever find a root cause for your belting cases? I seem to recall others mention unlocking as their issue. Also wondering if you've got the correct bolt for your chamber - .124" vs. .135" bolt face depths...

