For 9mm ammunition, it is best to use *small pistol primers*. Here are some certain recommendations and issues: ### Primer Style - *Little Pistol Primer*: This can be the typical primer used for reloading 9mm ammo. Brand names like CCI, Federal, Winchester, and Remington all develop responsible tiny pistol primers. https://large-rifle-primers-winch68901.total-blog.com/think-about-reliable-makes-recognized-for-excellent-and-dependability-56701770