Using a small rifle primer in pistol ammunition is usually not advisable. Here are some important factors to think about: ### Discrepancies in Structure 1. *Primer Composition*: Compact rifle primers commonly Have got a harder cup than compact pistol primers, made to face up to larger pressures affiliated with rifle https://gregoryfytmh.blogkoo.com/employing-a-smaller-rifle-primer-in-pistol-ammunition-is-generally-not-advisable-50978936