Quote Originally Posted by mcantar18c View Post
I don't consider the 5.7 (or .22TCM) to be rifle powered cartridges. Sure, they may be designed to shoot out of a rifle, but so is a .22LR. They don't have near the power that a true rifle cartridge does, and are really just glorified handgun rounds. The only thing they have over other handgun rounds is velocity... other than that, they're just another handgun caliber.
My thoughts as well. When I think handgun chambered in a rifle cartridge, I think .223 as a minimum.