I have a few, but haven't reloaded them yet, not enough for a run. All the articles I've read report very little difference in performance/accuracy when the .45 ACP is loaded with small pistol primers. In Handloader mag., the tested differences were less than 25 fps. velocity drop when using small primers with identical loads as large primer reloads, and no noticable diff. in accuracy/functioning. No need for a magnum primer...