.425 Westley Richards

The .425 Westley Richards is one of the classic African big-game rounds. It is a cartridge invented by Leslie Taylor of Westley Richards, a gunmaking firm of Birmingham England in 1909 as a proprietary cartridge for their bolt action rifles. The round has the unusual characteristic of having a rebated rim, one that is smaller in diameter than the case body. This allowed it to be used in converted Mauser 98 magazine rifles with a standard (.30-06 size) magazine length and bolt face. The rebated rim also allowed Government Game Officers to use stripper clips for rapid reloads when culling rogue animals.

.425 Westley Richards
Place of originEngland
Production history
DesignerWestley Richards
Case typeRebated rim, bottleneck
Bullet diameter.435 in (11.0 mm)
Neck diameter.456 in (11.6 mm)
Shoulder diameter.540 in (13.7 mm)
Base diameter.543 in (13.8 mm)
Rim diameter.467 in (11.9 mm)
Case length2.64 in (67 mm)
Overall length3.30 in (84 mm)
Ballistic performance
Bullet mass/type Velocity Energy
410 gr (27 g) SP 2,350 ft/s (720 m/s) 5,010 ft⋅lbf (6,790 J)
Source(s): "Cartridges of the World" [1]

See also


  1. Barnes, Frank C. (2006) [1965]. Skinner, Stan (ed.). Cartridges of the World (11th ed.). Iola, WI, USA: Gun Digest Books. pp. 396, 408, 411. ISBN 0-89689-297-2.
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