The highest velocity revolver cartridge ever produced, this .45 caliber chambering is basically a lengthened .454 Casull. Hodgdon recommends Winchester magnum large rifle primers. Reloading data can be found on the Hodgdon Reloading Data Center. 454 Casull/45 Colt dies work best with our case. Die sets can be purchased from Lee Precision, Redding or RCBS.