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The Ordnance QF 18-pounder, [note 3] or simply 18-pounder gun, was the standard British Empire field gun of the First World War-era. It formed the backbone of the Royal Field Artillery during the war, and was produced in large numbers. It was used by British Forces in all the main theatres, and by British troops in Russia in 1919.
15- pounder (multiple types) Field gun 76.2 mm 3 inch Ordnance QF 17- pounder: Anti-tank gun 76.2 mm 3 inch Ordnance QF 18- pounder: Field gun 83.8 mm 3.3 inch Ordnance QF 20-pounder: Tank gun 83.8 mm 3.3 inch Ordnance QF 25-pounder: Gun-howitzer 87.6 mm 3.45 inch Ordnance QF 32-pounder: Tank gun 94 mm 3.7 inch Ordnance QF 60-pounder: Heavy ...
It made 7.92mm Mauser, .30-06 Springfield, and 7.62mm NATO ammunition for the military and .303 British rifle ammunition for the civilian market. Packaging lists the date in the Ethiopian calendar year (7 to 8 years less than that of the Gregorian calendar ), while the cartridge headstamp uses the Common Era year.
It was too light to withstand the detonation of standard British explosive propellants, so its ammunition used ballistite packed in cambric bags instead. [2] The gun fired a 1.2-pound (0.54 kg) high-explosive shell at 800 feet (244 meters) per second; it also could fire an armour-piercing round at 1,000 feet (305 meters) per second.
In lighter QF guns, including field guns and anti-aircraft guns, the round was complete: "fixed ammunition", where the shell was attached to the cartridge case like a large bullet. Examples are the QF 3-pounder Vickers, QF 18-pounder field gun, QF 4-inch Mk V anti-aircraft gun and the current 4.5-inch Mark 8 naval gun. Fixed QF was suited for ...
Model Origin Acquired Type Cartridge Variants Notes Colt Model 1911 United States 1914 Semi-automatic.45 ACP: Model 1911; Model 1911A1; Canada purchased some in World War I and more in World War II.
From 1895 many ships' guns were converted to QF to use the same brass cartridge case and charge as the modern QF 6-inch guns. They were designated QFC for "QF Converted", and the new Mark designation began at I over the old gun Mark e.g. I/IV was the first version of Mk IV gun converted to QFC, II/VI was the second version of Mk VI gun converted.
The gun was ideal for defending against small fast vessels such as torpedo boats and was immediately adopted by the RN as the "Ordnance QF 3 pounder Hotchkiss". [2] It was built under licence by Elswick Ordnance Company. The Royal Navy introduced the QF 4.7-inch in HMS Sharpshooter in 1889, and the QF 6-inch MK 1 in HMS Royal Sovereign ...