Eradicating the crimp is a straightforward a single-time process. I make use of a RCBS Trim Mate crimp remover that inserts over a hand Device and reams the primer pocket. Once that may be carried out the case is ready for continuous use. The main element is identifying military brass. https://reloading-9mm22963.shotblogs.com/9mm-bullets-for-reloading-an-overview-51630171