AR pressure signs...

by rob , Thursday, July 02, 2015, 16:11 (3372 days ago) @ Cherokee

Same mag throughout and it only acted up with the 27.4 load. I think the pressure is such that the case is giving sticky extraction while at the same time it has higher pressure on the gas key trying to unlock the bolt so it's stripping the bolt off the rim leaving the case in the chamber or partially extracted and trying to feed a new round while the chamber is occupied. That's my best analysis but it's not worth firing any more to figure out...can't be good on the rifle.