For 9mm ammunition, it is best to use *modest pistol primers*. Here are a few specific suggestions and concerns: ### Primer Style - *Small Pistol Primer*: This can be the regular primer useful for reloading 9mm ammo. Makes like CCI, Federal, Winchester, and Remington all develop responsible small pistol primers. https://winchestersmallrifleprime51617.kylieblog.com/31905953/look-at-reliable-makes-recognized-for-top-quality-and-reliability