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Beaumont–Adams revolver


Beaumont–Adams revolver

The Beaumont–Adams revolver is a muzzle-loading, double-action, percussion revolver. Originally adopted by the British Army in .442 calibre (54-bore, 11.2mm) in 1856, many were later converted to use centrefire cartridges. It was replaced in British service in 1880 by the .476 calibre (11.6mm) Enfield Mk I revolver.

History On 20 February 1856, Lieutenant Frederick E. B. Beaumont of the Royal Engineers was granted a British patent for improvements to the Adams revolver which allowed them to be cocked and fired either by manually cocking the hammer as in Colt single-action revolvers, or by just pulling the trigger. Beaumont was granted a US Patent (no. 15,032) on 3 June of the same year.

At that time there was intense competition between Adams and Colt, which was rapidly expanding its sales and had opened a London factory competing with the British firearms trade, manufacturing firearms with interchangeable parts. The older 1851 and 1854 Adams revolvers were self-cocking, also known as double-action. The Adams revolver was favoured by British officers in the Crimean War and colonial conflicts due to the stopping power of its larger 54 bore (.442 cal) bullet (compared with their main competitor, the smaller .36 cal Colt Navy revolvers), and the speed of the Adams trigger-cocking action for close-quarters fighting (over the more cumbersome Colt action).

In partnership with George and John Deane, the company of Deane, Adams & Deane produced the new revolver in a variety of calibres and sizes, from pocket pistols to large military versions. The United Kingdom officially adopted the 54-bore (.442 calibre) Beaumont–Adams in 1856, Holland and Russia following soon after. To meet the growing demand for its weapons, Deane, Adams & Deane contracted companies in Birmingham and Liége to manufacture their weapons under licence. The new revolver gave Robert Adams a strong competitive advantage and Samuel Colt shut his London factory due to a drop in sales.

In the US, the Massachusetts Arms Company was licensed to manufacture about 19,000 specimens of the gun in .36 calibre, of which about 1,750 were purchased by the Union Army at the beginning of the American Civil War. They also made a pocket version in .32 calibre.

Used by
- United Kingdom & Colonies
- British Commonwealth
- Royal Canadian Mounted Police
- United States
- Confederate States

Wars
- American Civil War
- Anglo-Zulu War
- First Boer War
numerous British colonial conflicts

No. Built c. 250,000

Beaumont–Adams revolver

Weapontype:
Service revolver

Manufacturer:
Robert Adams of London

Operation:
double-action revolver

Chambers:
.479 (38-bore), .442 (54-bore), & .338 (120-bore)

Weight:
2.4 lb (1.1 kg), unloaded

Length:
11.25 in. (286 mm)

Feed system:
5-round cylinder

In service dates:
1862–1880

In Production:
1862–1880

Sights:
fixed front post and rear notch

Effective range:
35 yds, maksimum practical 100 yds

Muzzle Velocity:
620 ft/s (190 m/s)

 

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