11-24-2021, 12:14 AM
Textbook example of case head separation.
That normally points to a failure node in the brass.
You normally dont see the extractor survive an overpressure event in the AR-15, and 1-2 bolt lugs often will shear off.
With the bolt and extractor still intact, I think you just had a bad piece of brass with stretching in that circumferential area around the case web.
Do you have any pictures of your once-fired brass that havent been re-sized?
That normally points to a failure node in the brass.
You normally dont see the extractor survive an overpressure event in the AR-15, and 1-2 bolt lugs often will shear off.
With the bolt and extractor still intact, I think you just had a bad piece of brass with stretching in that circumferential area around the case web.
Do you have any pictures of your once-fired brass that havent been re-sized?
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com