Employing a modest rifle primer in pistol ammunition is usually not advised. Here are a few critical details to contemplate: ### Differences in Design 1. *Primer Composition*: Little rifle primers typically Use a tougher cup than smaller pistol primers, created to face up to greater pressures related to rifle cartridges. https://winchester-primers-for-sa79123.shotblogs.com/using-a-little-rifle-primer-in-pistol-ammunition-is-normally-not-advisable-45476371