| QF 6-pounder 10 cwt Mark I | |
|---|---|
 The 6-pounder gun mark I in twin mark I mounting on board HMS Mackay whilst she is at Harwich. | |
| Type | Naval gun and coastal gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1930s–1950s |
| Used by | British Commonwealth |
| Wars | Second World War |
| Production history | |
| Variants | Naval gun (twin mount) Coastal gun (twin mount) |
| Specifications | |
| Mass | 1,060 lb (480 kg) |
| Length | 9 ft (2.7 m) |
| Crew | 6 |
| Shell | 57 × 464 mm R[1] |
| Calibre | 57 mm (2.24 in) |
| Breech | semi-automatic sliding breech block |
| Recoil | 1 ft (30 cm) |
| Elevation | -10/+80 |
| Traverse | 360 degrees |
| Rate of fire | 72 rounds per minute[citation needed] |
| Muzzle velocity | 2,390 ft/s (727 m/s) HE round |
| Effective firing range | 11,300 yards (10,330 m) at 45° HE round |
The British QF (quick-firing) 6-pounder 10 cwt gun[note 1] was a 57 mm twin-mount light coast defence and naval gun from the 1930s to 1950s.
- ^ Ammo Table quarryhs.co.uk [dead link]
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