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The Ordnance Quick-Firing 17-pounder (or just 17-pdr) [note 1] was a 76.2 mm (3 inch) gun developed by the United Kingdom during World War II. It was used as an anti-tank gun on its own carriage, as well as equipping a number of British tanks.
The Sherman Firefly was a medium tank used by the United Kingdom and some armoured formations of other Allies in the Second World War.It was based on the US M4 Sherman but was fitted with the more powerful British 76.2 mm (3.00 in) calibre 17-pounder anti-tank gun as its main weapon.
The 17pdr SP Achilles (officially 17 pounder, Self-Propelled, Achilles) is a British variant of the American M10 tank destroyer armed with the British Ordnance QF 17-pounder high-velocity 76.2 mm (3-inch) anti-tank gun in place of the M10's considerably less powerful 3-inch (76.2 mm) Gun M7.
The 17-pounder was also much larger and had a longer recoil than the 76 mm, which required a redesign of the turret and despite this, made the turret very cramped. The 17-pounder also had a less effective HE round. The 76 mm gunned Shermans supplied to the British were only used in Italy or by the Polish 1st Armoured Division in north-west Europe.
Pakistani M4A1E6 Sherman on display at Ayub Park.. E4/E6 Shermans – Two of what would become the last of the US-produced Sherman tank variants. During the early 1950s, US Ordnance military depots and/or outsourced private civilian contractors installed the 76 mm M1 tank gun in the older small-type turret (designed for the original 75 mm M3 tank gun) of M4A1 and M4A3 Shermans.
20 mm akan m/40 (Bofors 20 mm automatic gun L/70 model 1940) Sweden: World War II - Cold War 20 mm (0.79 in) 20 mm akan m/45 (Bofors 20 mm automatic gun L/70 model 1945) Sweden: Cold war 25 mm (0.98 in) 25 mm akan m/32 (Bofors 25 mm automatic gun L/64 model 1932) Sweden: Interwar - Cold war 25 mm (0.98 in) 1-inch Nordenfelt gun United Kingdom
The Mark 17 gun could fire a 105-pound (48 kg) Common shell (HE) projectile 19,800 yd (18.1 km) at an elevation of 20 degrees. Ammunition was bagged (the projectile and the powder bag were separate). The full-charge powder bag for these guns weighed 34 or 34.5 lb (15.4 or 15.6 kg). [ 6 ]
The front of the T23 turret, which like the 105 mm-armed Sherman's turret, did not have a rotor shield, was protected by an unsloped 88.9 mm (3.50 in) thick cast gun mantlet. Combat experience indicated that the single hatch in the three-man 75 mm gun turret was inadequate for timely evacuation, so Ordnance added a loader's hatch beside the ...