For 9mm ammunition, you need to use *modest pistol primers*. Here are a few precise recommendations and things to consider: ### Primer Style - *Small Pistol Primer*: This is actually the typical primer useful for reloading 9mm ammo. Makes like CCI, Federal, Winchester, and Remington all develop reliable little pistol https://winchester-small-pistol-p99133.ampblogs.com/look-at-reputable-manufacturers-recognized-for-good-quality-and-dependability-68188228