Это?
http://nigelef.tripod.com/anti-tank.htm

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http://forum.axishistory.com/viewtop...?f=85&t=138448

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http://www.quarry.nildram.co.uk/ammotable9.htm

Ordnance QF 3 inch howitzer was a howitzer fitted to British tanks of the Second World War so they could fire a HE shell in "close support" of infantry.
It was used to equip the British Infantry tanks: Matilda II, Churchill tank Mk I, and the cruiser tank Crusader (65 rounds).
Later in the war a larger (95 mm) howitzer was employed for the same purpose.

Specification
Calibre: 3 inch (76.2 mm)
Length of barrel: 75 inches (25 calibres)
Overall length: 78.2 inches
Weight: 256 lb
Muzzle velocity: 600-700 f/s
Ammunition
Cartridge: 76.2x134R
Smoke: 13.4 lb
HE: 13.9 lb
Range 2,000-2,500 yards
http://www.answers.com/topic/ordnanc...-inch-howitzer

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http://books.google.com/books?id=dcA...witzer&f=false