For 9mm ammunition, you'll want to use *smaller pistol primers*. Here are several specific recommendations and things to consider: ### Primer Type - *Little Pistol Primer*: This can be the typical primer useful for reloading 9mm ammo. Models like CCI, Federal, Winchester, and Remington all produce dependable tiny pistol primers. https://winchester-400-primers-5052861.blogacep.com/36628671/think-about-reliable-brand-names-recognized-for-excellent-and-trustworthiness