Finally getting a chance to sit down and really look at some of the the brass from my 7mm PRC and trying to figure out what I’m looking at. This is all once fired factory ELDX in a carbon six Tikka prefit. None of these pieces have been run through a sizing die. No primers were blown, just decapped tonight. Several pieces have ejector marks. A few had sticky bolt lift. All pieces have a ring around them that appears to be the beginnings of case head separation. I ran a paper clip through several cases and cannot feel the ring from the inside. Is this overpressured factory ammo? Sloppy chamber? What am I looking at?