Using a smaller rifle primer in pistol ammunition is mostly not proposed. Here are a few important points to take into consideration: ### Variations in Structure 1. *Primer Composition*: Tiny rifle primers generally Use a harder cup than small pistol primers, developed to withstand bigger pressures linked to rifle cartridges. https://winchester-primers-for-sa46789.thezenweb.com/employing-a-modest-rifle-primer-in-pistol-ammunition-is-generally-not-advised-69354592