in battle, and its reputation for shootability and accuracy, led to the duplication of the cartridges' characteristics in the .45 ACP. In the early 1880s the Benet type (internal) cartridge primer was retired and the modern Boxer type (external) primer was adopted for all future military production of revolver ammunition. Synonyms .45 S&W .45 S&W Schofield .45 M1877 ball revolver See also References External links .45 Schofield Revolver Reloading info Schofield, G. W., "Revolving Fire-Arm", Issued 1873 Pistol and rifle cartridges Military cartridges Smith & Wesson cartridges