RBL 12-pounder 8 cwt Armstrong gun
| RBL 12 pounder 8 cwt gun | |
|---|---|
At the Australian War Memorial, Canberra | |
| Type | Field gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1859–19?? |
| Used by | British Empire |
| Wars | New Zealand Wars Second Opium War |
| Production history | |
| Designer | W.G. Armstrong Co. |
| Manufacturer | Royal Gun Factory |
| Unit cost | £79 - £170 |
| Specifications | |
| Barrel length | First model: total 84-inch, bore 73.375-inch New model: total 72-inch, bore 61.375-inch (20.46 calibres) |
| Crew | 9 |
| Shell | 10 lb 11 oz Shrapnel 11 lb 4 oz common shell 10 lb 8 oz Segment 10 lb 9 oz case |
| Calibre | 3-inch (76.2 mm) |
| Breech | Armstrong screw with vertical sliding vent-piece (block) |
| Muzzle velocity | 1,239 feet per second (378 m/s) |
| Effective firing range | 3,400 yards (3,100 m) |
The Armstrong Breech Loading 12 pounder 8 cwt, later known as RBL 12 pounder 8 cwt, was an early modern 3-inch rifled breech-loading field gun of 1859.