BL 6-inch Mk XXII naval gun
The BL 6-inch Mk XXII gun was a British high-velocity 6-inch 50-calibre wire-wound naval guns deployed on the Nelson-class battleships from the 1920s to 1945.
| Ordnance BL 6-inch gun Mk XXII | |
|---|---|
Gun turrets on HMS Rodney, 1940 | |
| Type | Naval gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1927 – 1947 |
| Used by | United Kingdom |
| Wars | World War II |
| Production history | |
| Designed | 1921 |
| No. built | 40 |
| Variants | Mark XXII* |
| Specifications | |
| Mass | 19,824 lbs. (8,992 kg) |
| Barrel length | 300 inches (7.620 m) bore (50 calibres) |
| Shell | 1927 : 100 pounds (45 kg) 1942 : 112 pounds (51 kg) |
| Calibre | 6-inch (152.4 mm) |
| Breech | 364 lbs. (165.1 kg) Welin interrupted screw |
| Recoil | 16.5 in (42 cm) |
| Elevation | -5 / +60 degrees |
| Traverse | +100 / -100 degrees |
| Rate of fire | 5 rpm |
| Muzzle velocity | 898 metres per second (2,950 ft/s) |
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