I have two. One for 44-40 which I don't use and one for .45 ACP which I do. I've loaded for .45 ACP off and on for about 30 years and the 44-40 for about five. You'd think I'd have the .45 ACP figured out by now so I wouldn't need the FCD but I would for the thin walled 44-40. Guess I'm just weird.