OQF 3-pounder gun

Ordnance QF 3 pounder gun Mk I, Mk II
Ordnance QF 3 pounder gun Mk I, Mk II
	On a Medium Mk II (special) tank at the Royal Australian Armoured Corps Tank Museum, Puckapunyal, Victoria, Australia
Type	Tank gun
Place of origin	United Kingdom
Service history
In service	1924–1940
Wars	World War II
Production history
Variants	Mk I, Mk II
Specifications
Barrel length	1.5 m (4 ft 11 in) bore (32 cal) or 1.88 m (6 ft 2 in) (40 cal)
Shell	47x351R. 1.47 kg (3 lb 4 oz) shell.
Calibre	47-millimetre (1.85 in)
Muzzle velocity	560 m/s (1,840 ft/s) (40 cal gun)

The Ordnance QF 3 pounder 2 cwt gun was a 47 mm British tank gun based on the Ordnance QF 3 pounder Vickers naval gun, mounted on Vickers-built tanks in the 1920s and 1930s. The gun was produced in 31 calibre (59 inch) and 40 calibre (74 inch) versions. In British service the weapon only fired a APHE round, but HE was available to the shortened version fitted to Vickers 6 ton tanks sold overseas.

It was stated in the requirements of the A6 series of Vickers Medium tanks to have the ability to penetrate the armour of contemporary hostile tanks at a range of 1000 yards. The Vickers Medium Mark I was equipped with the Ordnance Quick Firing 2cwt Mark I version of the weapon, whilst from the Vickers Medium Mark II the Mark II version of the 3-pounder was utilized.

Even though other European countries still fielded similar weapons (e.g., Cannone da 47/32) at the start of the Second World War (and quite a few years into it), due to its comparatively low muzzle velocity the 3-pounder was considered obsolete by the war start by the British, with the Ordnance QF 2-pounder replacing it as the standard tank gun of British tanks.

Usage

References

Anthony G Williams, 38–47 MM CALIBRE CARTRIDGES Archived 2018-03-16 at the Wayback Machine
David Fletcher, British Battle Tanks: World War I to 1939, Oxford: Osprey Publishing

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v t e British Commonwealth artillery of World War II
Tank guns	QF 2-pounder QF 3-pounder QF 6-pounder QF 75 mm QF 3-inch howitzer QF 17-pounder 77 mm HV QF 95 mm howitzer QF 32-pounder
Anti-tank guns	QF 2-pounder QF 6-pounder QF 17-pounder QF 3-inch 16 cwt
Field guns and howitzers	75 mm Gun M1917 QF 18-pounder 25-pounder Gun-Howitzer 25-pounder Short QF 4.5-inch howitzer
Medium and heavy guns and howitzers	BL 4.5-inch medium field gun BL 60-pounder gun BL 5.5-inch medium gun BL 6-inch howitzer BL 6-inch gun Mk XIX 155 mm Long Tom BL 7.2-inch howitzer BL 8-inch howitzer BL 9.2-inch howitzer 240 mm howitzer M1
Mountain guns	75mm Pack howitzer M1 3.7-inch mountain howitzer
Mortars	SBML 2-inch mortar ML 3-inch mortar ML 4.2-inch mortar
Anti-aircraft weapons	Z Battery 20 mm Oerlikon 20 mm Polsten QF 1½-pounder Mk III QF 2-pounder naval gun Bofors 40 mm QF 3-inch QF 3.7-inch QF 4.5-inch Mk II QF 5.25-inch Mk II
Coast defence	QF 6-pounder 10 cwt QF 12-pounder QF 4.7-inch Mk I–IV BL 6-inch Mk VII & Mk XXIV BL 7.5-inch Mk VI BL 8-inch Mk VIII BL 9.2-inch Mk X BL 14-inch Mk VII BL 15-inch Mk I
Railway artillery	BL 9.2-inch Mk XIII railway gun BL 12-inch Mk V railway howitzer BL 13.5-inch Mk V railway gun BL 18-inch railway howitzer

Usage

See also

References