For 9mm ammunition, you ought to use *smaller pistol primers*. Here are some specific recommendations and issues: ### Primer Form - *Compact Pistol Primer*: Here is the common primer employed for reloading 9mm ammo. Brand names like CCI, Federal, Winchester, and Remington all make responsible compact pistol primers. ### Variants https://winchester-250-magnum-pri23467.blogtov.com/11877435/consider-reputable-manufacturers-known-for-high-quality-and-reliability