Employing a little rifle primer in pistol ammunition is generally not recommended. Below are a few critical details to consider: ### Variances in Style 1. *Primer Composition*: Smaller rifle primers usually Have a very more challenging cup than small pistol primers, developed to resist increased pressures associated with rifle cartridges. https://winchesterprimersuk35689.blog2freedom.com/31395463/using-a-smaller-rifle-primer-in-pistol-ammunition-is-generally-not-encouraged