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10mm is a very versatile cartridge. The 10mm FBI load was the genesis of the .40 S&W. It was quickly realized that some people just couldn't handle the full-house 10mm, so it was down-loaded and from there, it was quickly realized that less case capacity would work fine... and the rest is history.Meh, considering when I get my reloading setup completed, I can make the 10mm do anything I want it to do (from .40 levels to full power NORMA loadings w/ 220gr JHP to the double rounds like DoubleTap sells), I'll stick with 10mm being my primary caliber And since I just found a site where I can buy conversion barrels for the Witness, the G23 just got put on hold. I'll just start saving for the slides and barrels to make my 10mm Witness into a 9mm, .22LR, .45ACP, .40SW, .357SIG, and 9x25 Dillon
Full-house 10mm loads are supposed to equal the .41 magnum... in an autoloader.
Have fun with it!