05-15-2018, 05:34 PM
LRRPF52 Wrote:Les Baer (the company) has always used real Grendel bolts with .136" face depth. Some other companies that didn't do the engineering analysis of what it takes to make a reliable extractor used bolts with shallow face depth and figured it was the easiest, cheapest way for them to get into 6.5 Grendel or a variant of it.
The type of chamber variant does not determine the bolt face depth. You can chamber 6.5 Grendel SAAMI and .264 LBC-AR to whatever bolt you want. It's just that the thicker extractor claw on a .136" face depth bolt has more material to prevent shearing off than a .125" face depth bolt can ever have.
As to the OP's issue, I would find out what bolt the chamber was cut for first.
Gotcha. So a .264LBC could take 0.125" or 0.136". Any idea how to find out? I looked on the upper and couldn't see any "Type I" vs "Type II" designation, which I think is what to look for. Also didn't see anything on the barrel but admittedly haven't taken off the freefloating handguard.