Beaumont–Adams revolver

Beaumont–Adams revolver
Beaumont–Adams percussion revolver
TypeRevolver
Place of originUnited Kingdom
Service history
In service1862–1880
Used byUnited Kingdom & Colonies
North-West Mounted Police
United States
Confederate States
Empire of Japan
WarsAmerican Civil War
Boshin war
Anglo-Zulu War
First Boer War
numerous British colonial conflicts
Production history
DesignerLt. Beaumont (Royal Engineers), Robert Adams
Designed1862
ManufacturerRobert Adams of London
Produced1862–1880
No. builtc. 250,000
Specifications
Mass2.4 lb (1.1 kg), unloaded
Length11.25 in. (286 mm)

Cartridge.450 Adams Boxer centerfire cartridge
(conversion)
CalibrePercussion
United Kingdom:
.500 in (12.7 mm) (38-bore), .479 in (12.2 mm) (42-bore), .442 in (11.2 mm) (54-bore) & .320 in (8.1 mm) (120-bore)
United States:
.36 in caliber & .31 in caliber
ActionDouble-action
Muzzle velocity620 ft/s (190 m/s)
Effective firing range35 yd (32 m)
Maximum firing range100 yd (91 m)
Feed system5-round cylinder
SightsFixed front post and rear notch

The Beaumont–Adams revolver is a black powder, double-action, percussion revolver. Originally adopted by the British Army in .442 calibre (54-bore, 11.2 mm) in 1856, it was replaced in British service in 1880 by the .476 calibre (11.6 mm) Enfield Mk I revolver.