I acquired about 600+ rounds of loaded 300 Blackout from a gentleman a while ago. I couldn't get an answer if he bought them from someone or he loaded them but the shoulders where pushed way back and was causing case separation when he fired them. I checked them in my case gauge and they dropped in nice and deep into the gauge. I pulled all the ammo apart and reloaded them into properly sized brass.
My question is, can this be used for something shorter? 30 Mauser or 7.62x25 perhaps? Or is it better to just to dump it in the scrap bucket and move on?
I hate to see it just scrapped as most of it is LC headstamped brass with a bit of commercial mixed in.