And anyone else that can give me useful information. I have wanted a small caliber, high velocity pistol cartridge for some time. But I have not been willing to buy a whole different pistol to get it. Or go to a lot of trouble and expense to make. I THINK I have thought of a satisfactory solution. I have an excess of .45s (yes, .45Nut, that is possible), even have one of them on the auction board. I'm pretty sure .357 Sig will work in a 1911 type. I think barrels are easy enough to acquire. Only other parts needed is an extractor and a .40 S&W magazine. Shouldn't be any problems there. Dies should be easy to find and I don't want to even talk about how available brass is.... Ideally, I would find a stripped slide, also very possible, and just make up a top end unit to use on one of my other 1911s. OK. You see any holes in that ballon? What kind of velocity could I expect with a 125 grain bullet out of a 5 inch barrel, as fast as I can make it go?