09-29-2022, 02:00 AM
The case is a partial case head separation from incorrect/excess cyclic rate.
Notice how the case shear is clocked perfectly with the extractor location.
Lapua brass camouflaged the issue because of its strength.
Had these been a weaker brass alloy, I suspect the failure would have happened much earlier.
Notice how the case shear is clocked perfectly with the extractor location.
Lapua brass camouflaged the issue because of its strength.
Had these been a weaker brass alloy, I suspect the failure would have happened much earlier.
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
