Smith & Wesson's Model 460XVRâ„¢ has the highest muzzle velocity of any production revolver on earth. The Model 460XVRâ„¢ is so revolutionary that it required an entirely new designation...XVR, X-treme Velocity Revolver. Performance Center guns originate from standard designs or are created from the ground up. From hand-cutting and fitting to fine tuning for precision, these firearms are top performers. Products from the Performance Center are the ultimate expression of old-world craftsmanship blended with modern technology.