When we look at the sub-44Mag rounds there is a plethora of popular options in the "smaller" calibers. Working backwards: 44Mag, 41Mag, 45 Colt, 10mm, 44 Spcl, 45 ACP, 45 Gap, 40S&W, 357Mag, 357Sig, 9mm, 38Super, 38Spcl, 380Auto, 327Fed, 32Mag, 32acp, 25acp, 22Mag, 22LR. In short, we go from...