12-14-2022, 03:00 AM
Thanks for the suggestions. I have not tried any factory ammo. I am using a H2 buffer and rifle length spring. Pretty sure I can rule the ammo out, I have been reloading for gas and bolt rifles for 20+ years and the chrono data is showing the expected FPS.
I am 99% sure it is not the barrel knowing PF's reputation for quality work and testing all their barrels. I figure it is something on my end and after ensuring myself that the bolt is not binding or catching that leaves the gas system and the buffer assembly. I have removed and replaced the gas block and tube twice now to make sure the alignment and position was correct and all three Grendel bolt carriers will drop into place with no binding on the gas tube
Since my lower works perfectly will my Grendels and .223 uppers I have decided to put together a new lower using a carbine length buffer and spring. I will update the thread after I test it hbut I really do think that will do the trick
I am 99% sure it is not the barrel knowing PF's reputation for quality work and testing all their barrels. I figure it is something on my end and after ensuring myself that the bolt is not binding or catching that leaves the gas system and the buffer assembly. I have removed and replaced the gas block and tube twice now to make sure the alignment and position was correct and all three Grendel bolt carriers will drop into place with no binding on the gas tube
Since my lower works perfectly will my Grendels and .223 uppers I have decided to put together a new lower using a carbine length buffer and spring. I will update the thread after I test it hbut I really do think that will do the trick