For 9mm ammunition, it is best to use *modest pistol primers*. Here are some precise recommendations and factors: ### Primer Style - *Little Pistol Primer*: This is actually the regular primer used for reloading 9mm ammo. Brand names like CCI, Federal, Winchester, and Remington all generate reputable modest pistol primers. https://winchester-primers-in-sto62614.tinyblogging.com/take-into-consideration-reliable-manufacturers-known-for-high-quality-and-trustworthiness-75117440