11-23-2021, 08:40 PM
Happy2Shoot Wrote:Fixed firing pin? Out of battery?
I assume this is a PSA upper?
Where did you find this load data? Only published load I can find is for 120gr Gold Dot at 25.3gr. You were at 27.7gr!
Alternative guess:
Over charged by 2.5 grains of powder. Port pressure way over gassed, due to pistol length gas system and over charged ammo. Super rough PSA chamber (I know I have one and had to fix it with a chamber hone) didn't let go of the case in time and the extractor ripped the rim off.
Floating firing pin
Not out of battery...bolt was completely closed and locked
Yes....PSA Complete Upper.