Was sorting through about a thousand .223 cases I've been picking up at the range, mostly FC, LC, RP, some Hornady Frontier, yada yada. I noticed one Frontier case...
Fired in an AR, more than likely. I think the primer must have blown out of someone's gun, turned around, and as the carrier recoiled back, the inertia seated the primer below flush!? I looked through the flash hole; sure enough, there's a very pretty and uniform primer strike visible through it. The primer looks clean cause it spent 4 hours in a tumbler; there is no compound left. Never seen it happen; anyone's thoughts?
Fired in an AR, more than likely. I think the primer must have blown out of someone's gun, turned around, and as the carrier recoiled back, the inertia seated the primer below flush!? I looked through the flash hole; sure enough, there's a very pretty and uniform primer strike visible through it. The primer looks clean cause it spent 4 hours in a tumbler; there is no compound left. Never seen it happen; anyone's thoughts?