For 9mm ammunition, you must use *modest pistol primers*. Here are a few specific suggestions and things to consider:### Primer Sort- *Small Pistol Primer*: Here is the common primer used for reloading 9mm ammo. Brand names like CCI, Federal, Winchester, and Remington all generate reputable smaller pistol primers.### Variations- *Normal vs. Magnum*

Choosing the right primer for your ammunition is crucial for ensuring reliable ignition and optimal performance. Here’s a step-by-step guide to help you make an informed decision:### 1. Understand Primer TypesPrimers are categorized into two main types: *large* and *small*. The size you need depends on the caliber of your ammunition.- *Small Prim