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| Ordnance QF 20 pounder Mark I | |
|---|---|
 Charioteer tank equipped with the 20 pounder. This gun is a later model which is fitted with a bore evacuator | |
| Type | Tank gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1948–1976 |
| Used by | United Kingdom Australia Austria Canada Finland Israel Jordan Lebanon South Africa |
| Wars | Korean War Vietnam War Six-Day War South African Border War |
| Specifications | |
| Barrel length | 226.4 in (5.75 m), 66.7 calibres |
| Shell | 84×618mm R |
| Calibre | 84 millimetres (3.31 in) |
| Elevation | +18° to −10° in Centurion Mk 5 |
The Ordnance QF 20 pounder (known as 20 pounder, 20 pdr or simply 20-pr) was a British 84 mm (3.307 inch) tank gun.[1][i] It was introduced in 1948 and used in the Centurion main battle tank, Charioteer medium tank, and Caernarvon Mark II heavy tank. After the 20 pounder gun was found to have inadequate performance against the Soviet T-54 the gun was mostly replaced in service by the larger calibre 105 mm L7 gun.
- ^ Pugh (1962), p. 34.
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