Hi, I'm new here. This will be my second post. I have an idea bouncing around in my head for a semi automatic pistol chambered in. 454 casull. If you know where I got the idea, that makes you as big a nerd as I am. I think it would have some practical applications. For one thing, the recoil, while remaining quite stout, would be somewhat less than a revolver. You would also get a capacity advantage. I was thinking about making it work sort of like an automag. It would have a slide. In theory, this would allow for lighter recoil springs, while keeping dust, dirt, ice, and other nasty things from mucking up the works. Keep in mind that I'm not any sort of engineer. I've worked with a gunsmith, but I am not one. I realize that it would be heavy (wouldn't you want a .454 to be? ) and have a large grip. Some people just can't shoot certain guns. Such is life. So, to sum up, I'm thinking of a recoil-operated semi auto with a rotating bolt, a reciprocating barrel, and a slide/bolt carrier. Is there any reason that this just cannot possibly work? I'm hoping that some more knowledgeable person will come along and save me from a waste of resources. I don't need a large, gun-like paperweight.