by sungazer » 15 Jun 2019, 9:24 pm
Im with Brett and the others that mention headspace. What normally happens is that the shoulder moves forward lengthening the case. What you have can be caused by a light loading, one with the projectile jammed. ect. I would move away from that brass simplest solution. If you continue to chase down the culprit you will be much wiser but you are not going to get the factory to change.