Using a smaller rifle primer in pistol ammunition is generally not advised. Here are several vital details to contemplate: ### Variances in Style and design one. *Primer Composition*: Smaller rifle primers commonly Use a more challenging cup than smaller pistol primers, made to resist larger pressures linked to rifle cartridges. https://winchester-large-pistol-p30627.designertoblog.com/62845039/using-a-small-rifle-primer-in-pistol-ammunition-is-usually-not-encouraged