For 9mm ammunition, you must use *compact pistol primers*. Below are a few precise tips and things to consider: ### Primer Type - *Tiny Pistol Primer*: This is actually the common primer useful for reloading 9mm ammo. Makes like CCI, Federal, Winchester, and Remington all make reputable smaller pistol primers. https://winchesterprimersinstock26926.canariblogs.com/take-into-account-highly-regarded-models-recognized-for-top-quality-and-reliability-46537428