Just took my new Ruger Mini 14 Tactical to the range to try it out. No failures to load or eject. Groupings were good. No indication of any problem at all.
After firing a couple of magazines, I checked one of the cartridge casings to check the primer strike and make sure no issues. What I found was the neck of the extracted cartridge casings were warped. It wasn’t just one or two, but almost all of them. Have never seen this before with any of my AR-15s.
The ammo is factory new, made in USA, 5.56 brass M193 ball.
Anyone see this before or know what’s causing it? Safety issue?
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