Taking away the crimp is a simple one-time approach. I use a RCBS Trim Mate crimp remover that inserts on the hand Instrument and reams the primer pocket. Once which is completed the case is ready for continuous use. The key is pinpointing armed service brass. Along with the headstamp https://9mm-dirty-once-fired-bras19529.smblogsites.com/37672828/a-secret-weapon-for-9mm-bullet-reloading