Smith & Wesson Model 460XVR™
I suspect that most Dirty Harry, Model 29 .44 Magnum fan's are already aware of this, but the Smith & Wesson Model 460XVR™ has the highest muzzle velocity of any production revolver on earth. The Model 460XVR™ is so revolutionary that it required an entirely new designation...XVR, X-treme Velocity Revolver.
With a Muzzle Velocity of 2200 feet per second, and with 2149 foot-pounds of energy at the muzzle, the 460XVR could actually live up to Dirty Harry's claim, and do to a head what it does to this cantaloupe, "blow it clean off."