Good read on the testing of the S&W 648 .22wmr revolver
An Official Journal Of The NRA | Tested: Smith & Wesson Model 648 .22 WMR Revolver
Outfitting this smooth-cycling .22 WMR wheel gun with a red-dot optic makes it a potent small-game hunting option. If you’re looking for more punch than a .22 LR pistol can provide, with tight groups to boot, this wheel gun deserves your consideration.
www.americanhunter.org