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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) [2] Effective firing range: 3,400 yards (3,100 m)
QF 12 pounder 12 cwt AA gun, British AA gun of World War I; QF 12 pounder 18 cwt naval gun, British naval gun of 1904–1920s; RBL 12 pounder 8 cwt Armstrong gun, British field gun of 1859; Twelve-pound cannon, cannon sized for a 12-pound ball, see Naval artillery in the Age of Sail; 12-pounder Whitworth rifle, British rifled breechloader field ...
The introduction of Cordite also led to the decision that the 12-pounder was capable of firing a heavier shell up to 15 lb (6.8 kg). A 14-pound shell was adopted and the gun became a "15-pounder" from 1895. [4] At that point the 12-pounder 7 cwt became redundant.
The QF 12-pounder 12-cwt gun (Quick-Firing) (abbreviated as Q.F. 12-pdr. [12-cwt.]) was a common, versatile 3-inch (76.2 mm) calibre naval gun introduced in 1894 and used until the middle of the 20th century. [4] It was produced by Armstrong Whitworth, Elswick and used on Royal Navy warships, exported to allied countries, and used for land ...
Described as one of the greatest steps forward in gun design for centuries, Armstrong was knighted for his services to the British state in 1859. [1] The rifled breech-loading gun (produced in various calibre ranges including six, nine, 12, 20, 40 and 110 pound models) was an innovative design that revolutionised artillery use across the world.
The Armstrong gun—mainly the 12-pounder—was used extensively in the 1863 conflict in New Zealand between British troops and Maori in the Waikato. A well preserved 12-pounder which was used in the battle of Rangiriri is at the Te Awamutu museum. The barrel can traverse 6 degrees left or right without moving the gun carriage.
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The gun as first made weighed 72 cwt (8,064 lb) but the heavier 82 cwt (9,184 lb) version, incorporating a strengthening coil over the powder chamber, was the first to enter service in 1861. It was intended to replace the smoothbore muzzle-loading 68-pounder gun , and was intended to be Britain's first modern rifled breech-loading naval gun.