For 9mm ammunition, you should use *smaller pistol primers*. Here are some particular recommendations and concerns: ### Primer Sort - *Tiny Pistol Primer*: This can be the typical primer used for reloading 9mm ammo. Makes like CCI, Federal, Winchester, and Remington all produce reputable smaller pistol primers. ### Variations - https://winchester-primers06061.theisblog.com/31638980/look-at-reputable-makes-noted-for-high-quality-and-trustworthiness