Hello everyone, I need some Help. I'm brand new to reloading, reloading for my 6mm Remington because I live in California. That means I can't find ammo for it, never mind lead free. So my first batch of 60 rounds, once fired brass from my rifle, came out pretty good and shot better than the factory loads I have for it. Still need to tighten them up a bit. The problem I'm having is that I bought some once fired brass from a local reloading store and didn't realize they had a weird ring near the base of the case until after i cleaned them up. So I went through the process clean, full length resize, measure, trim etc... I thought the full length resize would take care of the ring. So I went ahead and loaded up about 50 rounds and they will not chamber in my rifle. I've also got about 90 cases I didn't load up...luckily. What can I do about this problem, can it be fixed and more importantly what is it?