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A 14-pounder (6.35 kg) (3.8 in (97 mm)) James rifle on the First Bull Run battlefield, the only weapon entirely designed by James adopted by the US Army. Two Model 1829 32-pounder (14.5 kg) seacoast guns, rifled by the James method (sometimes called 64-pdr (29 kg) James rifles).
37 mm 1.457 inch Ordnance QF 2-pounder: Anti-tank gun 40 mm 1.575 inch Ordnance QF 2-pounder "pom pom" Anti-aircraft gun 40 mm 1.575 Ordnance QF 3-pounder Vickers: Naval gun 47 mm 1.85 inch Ordnance QF 6-pounder: Anti-tank gun 57 mm 2.244 inch Ordnance BL 10-pounder Mountain gun: Mountain gun 69.8 mm 2.75 inch 12-pounder (multiple types)
RML 16 pdr 12 cwt gun barrel diagram, 1877 The gun consisted of an 'A' tube of toughened steel, over which was shrunk a 'B' tube of wrought iron. The gun was rifled using the system developed by William Palliser , in which studs protruding from the side of the shell engaged with three spiral grooves in the barrel.
During firing trials on 28 June 1945, the 32-pdr Shot Mk.3 APDS shot penetrated 200 mm (7.9 in) of rolled homogeneous armour at 50° – a line of sight equivalent of 311 mm (12.2 in) - and 4,880 ft/s (1,487 m/s) on impact, which meant that its penetration surpassed those of the 17-pdr and 20-pdr APDS rounds, and could even rival early armour ...
30 mm (1.2 in) Mk44 Bushmaster II United States: Modern 30 mm (1.2 in) CRN 91 Naval Gun India: Modern 30 mm (1.2 in) DS30B rapid fire cannon United Kingdom: Modern 35 mm (1.4 in) Oerlikon Millennium 35 mm Naval Revolver Gun System Switzerland: Modern 37 mm (1.5 in) Cannone-Mitragliera da 37/54 (Breda) Italy: World War II 37 mm (1.5 in)
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 ...
The new gun was of the same 9-foot-6-inch (290 cm) length as the Blomefields, but slightly heavier at 58 cwt (2946 kg). The new gun had slightly reduced windage compared with the Blomefield, at 0.198 inches (5.0 mm). Trials were held in 1847 and 1851, with the gun being adopted into service in 1853. [16]
The Ordnance QF 20 pounder (known as 20 pounder, 20 pdr or simply 20-pr) was a British 84 mm (3.307 inch) tank gun. [ 1 ] [ i ] It was introduced in 1948 and used in the Centurion main battle tank, Charioteer medium tank, and Caernarvon Mark II heavy tank.