Removing the crimp is a simple 1-time method. I use a RCBS Trim Mate crimp remover that inserts on the hand Instrument and reams the primer pocket. Once that is certainly finished the case is ready for ongoing use. The true secret is identifying military services brass. As well as https://9mmbulletreloading48258.thelateblog.com/38486485/the-smart-trick-of-reloading-9mm-ammo-that-nobody-is-discussing