01-26-2014, 04:05 AM
woohoo Wrote:No, I have never wondered why.
I'm guessing you have never broken a bolt or knows what happens when one does break. Back in the 80s and 90s we broke 5.56 bolts pretty often until we could get Carp 158 bolts from Colt or Microbest. I'm not learning much about the Grendel these days, 2007 was all I needed. We started machining stronger bolts and don't worry about that AA imposed 52,000psi max.
We've been shooting the 6mm BRX at 60-62k psi which is quite a bit faster than the Grendel in the same receivers and carriers that are used with the Grendel. No one seems to be breaking extensions , or receivers or carriers. Are they still breaking Grendel bolts?
Gosh, breaking bolts and all this stuff about ammo not fitting in the chambers doesn't sound too good does it?
No broken bolts in Liberty barrels or barrels blowing up are anything.