The highest velocity revolver cartridge ever produced, this .45 caliber chambering is basically a lengthened .454 Casull. Hodgdon recommends Winchester Magnum Large Rifle primers. Type Rifle Style Large Length 1.790"-1.796" Series 460 S&W Gun Type Rifle Material Brass Quantity 50 Per Bag Metal Type Brass Caliber Or Gauge 460 S&W Mag