Utilizing a compact rifle primer in pistol ammunition is generally not recommended. Below are a few critical points to look at: ### Distinctions in Design 1. *Primer Composition*: Compact rifle primers generally have a more challenging cup than tiny pistol primers, built to resist larger pressures linked to rifle cartridges. https://reidycckj.bloguetechno.com/utilizing-a-tiny-rifle-primer-in-pistol-ammunition-is-usually-not-suggested-66667123