BL 4.5-inch medium field gun
The BL 4.5 inch medium gun was a British gun used by field artillery in the Second World War for counter-battery fire. Developed as a replacement for the BL 60-pounder gun it used the same carriage as the BL 5.5-inch medium gun but fired a lighter round further.
| BL 4.5 inch medium gun | |
|---|---|
4.5 inch medium field gun in action in July 1942 | |
| Type | Medium gun |
| Place of origin | United Kingdom |
| Service history | |
| Used by | United Kingdom, Canada, Portugal |
| Wars | World War II Portuguese Colonial War |
| Production history | |
| Produced | 1938-1945 |
| No. built | ~650 |
| Specifications | |
| Mass | Travel: 15,986 lb (7,251 kg) Action: 12,635 lb (5,731 kg) |
| Barrel length | 15 ft 9 in (4.8 m) 42.8 calibres |
| Crew | 10 |
| Shell | 114 x 695mmR 55 lb (25 kg) HE |
| Calibre | 4.5 inch (114 mm) |
| Breech | Welin breech and Asbury mechanism |
| Elevation | 60-pdr carriage: 0 to +42° 5.5-inch gun carriage: -5° to +45° |
| Traverse | 60-pdr carriage: 7° 5.5-inch gun carriage: 60° left to right |
| Muzzle velocity | 2,250 ft/s (686 m/s) |
| Maximum firing range | 11.65 mi (18.75 km) |
| Sights | calibrating and reciprocating |
It had nothing in common with the QF 4.5 inch Howitzer or the QF 4.5 inch AA gun.
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