The .455 Webley cartridge remained in service with British and Commonwealth forces until the end of the Second World War.

Six main types of .455 ammunition were produced: In addition to the Webley revolvers, the British and Canadian armies also ordered several thousand Smith & Wesson .44 Hand Ejector revolvers, chambered in .455 Webley,[8] in a rush to equip their troops for the Great War.

Commercial manufacturers Fiocchi, PPU, Steinel, and Hornady currently produce the .455 Webley cartridge (in Mk II).

[4] The early version of the cartridge (c.1904) had a shorter[clarification needed] 21.7 mm (0.85 in) semi-rimmed case with a narrow rim and a pointed bullet.

[3][10] The .450 Adams (1868), .476 Enfield (1881), and .455 Webley Mk.I (1891) British service cartridges all featured a case diameter of .476 inch [12.09mm].