Using a small rifle primer in pistol ammunition is mostly not suggested. Here are a few crucial details to look at: ### Variations in Structure one. *Primer Composition*: Tiny rifle primers normally Use a more difficult cup than small pistol primers, built to withstand higher pressures linked to rifle cartridges. https://jaidenvsnib.blogocial.com/utilizing-a-tiny-rifle-primer-in-pistol-ammunition-is-normally-not-advised-67353324