NAME – 11.43x19mmR

NAME (COMMON) – .455 Revolver (Webley) Mk II

TYPE – Rimmed centerfire

YEAR OF INTRODUCTION – 1897

COUNTRY OF ORIGIN – Great Britain

CASE TYPE – Rimmed straight

CARTRIDGE LENGTH – 31.2 mm (1.23 in)

CASING LENGTH – 19.6 mm (0.77 in)

CASE HEAD DIAMETER – 12.2 mm (0.480 in)

CASE RIM DIAMETER – 13.6 mm (0.535 in)

BULLET TYPE – Conical, round-nosed lead

BULLET DIAMETER – 11.56 mm (0.455 in)

BULLET WEIGHT – 17.17 g (265 grains)

POWDER WEIGHT – 0.49 g (7.5 grains) [Cordite]

CASING WEIGHT – 5.02 g (77.5 grains)

TOTAL ROUND WEIGHT – 22.68 g (350 grains)

MUZZLE VELOCITY – 189 m/s (620 fps)

NOMINAL BARREL LENGTH – 15.2 cm (6 in)

MUZZLE ENERGY – 307 j (226 ft/lb)

     This British military revolver round is the smokeless powder (Cordite) version of the earlier .455 Revolver Mk I, a black powder round. Webley, Smith & Wesson, and Colt all made handguns for this round, primarily for the British military. It was used in both World Wars and declared obsolete shortly after World War II.