| Ordnance QF 75 mm | |
|---|---|
 Gun on Cromwell tank at Overloon War Museum, Netherlands | |
| Type | Tank gun |
| Place of origin | United Kingdom |
| Service history | |
| Used by | British Empire |
| Wars | Second World War |
| Production history | |
| Manufacturer | Royal Ordnance |
| Specifications | |
| Mass | 692 lb (314 kg) |
| Length | 117.4 in (2.98 m) |
| Barrel length | 118.1 in (3.00 m) |
| Shell | 75×350R |
| Calibre | 75 mm (2.953 in) |
| Muzzle velocity | 2,030 ft/s (620 m/s) |
| References | |
The Ordnance QF 75 mm, abbreviated to OQF 75 mm, was a British tank gun of the Second World War. It was obtained by boring out the Ordnance QF 6-pounder ("6 pdr") 57 mm anti-tank gun to 75 mm, to give better performance against infantry targets similarly to the 75 mm M3 gun fitted to the American Sherman tank. The QF came from "quick-firing", referring to the use of ammunition where the shell has a fixed cartridge. The gun was also sometimes known as ROQF from Royal Ordnance (the manufacturer) Quick-Firing.