Employing a small rifle primer in pistol ammunition is generally not advised. Below are a few vital points to look at: ### Variations in Design 1. *Primer Composition*: Little rifle primers generally Possess a more challenging cup than compact pistol primers, designed to withstand bigger pressures linked to rifle cartridges. https://martinoljml.shotblogs.com/utilizing-a-smaller-rifle-primer-in-pistol-ammunition-is-mostly-not-advisable-45429799