The Antitank SP76mm M10 was a Tank Destroyer designed in 1942, manufactured by General Motors, it was based on the fully tracked M4 Sherman chassis and was in use from 1942 to 1945. General Details (Tank Destroyer) Specifications Operational Date(s) 1942 - 1945 Quantity Produced 6406 Weight unknown Crew 5 M.G's small n/a M.G's large(>10mm) 1 Length 6.03 mtr Width 3.08 mtr Height 2.49 mtr Engine Details/Performance Max Road Speed 30 mph Max Cross Country Speed 20 mph Range Road 322 miles Range Cross Country 128 miles Fuel Type Diesel Fuel Capacity 165 gal Horse Power 375 hp Power/Weight unknown General Information The Antitank SP76mm M10 was a Tank Destroyer designed in 1942, manufactured by General Motors, it was based on the fully tracked M4 Sherman chassis and was in use from 1942 to 1945. The vehicle was powered by General Motors '6046 twin' diesel powerplant producing 375 HP which could drive the vehicle on roads at up to 30 mph with a range of about 322 miles before refuelling. Its cross country performance was good providing a max speed of about 20 mph and a range of about 128 miles. It was armed with 1 large machine gun consisting of 0.5 inch Browning Machine Gun M2 Its main armament consisted of a 3 in Gun M7 L/53 which could penetrate 120.4 mm of flat plate at 100 metres. This was the American M10 as built, and supplied on a Lend Lease basis. The turret was manually rotated and was open, so was not as fast to rotate as other models, and suffered from grenade and mortar attacks. Initially there was no provision for indirect fire, but this was resolved in later models and retrofitted. Armour Details Turret Front 57mm @ 45° (81mm) Side 25mm @ 75° (97mm) Rear 25mm @ 0° (25mm) Top 19mm @ 90° (19mm) Superstructure Front 38mm @ 35° (46mm) Side 19mm @ 52° (31mm) Rear 19mm @ 52° (31mm) Top 19mm @ 90° (19mm) Hull Front 51mm @ 34° (62mm) Side 25mm @ 0° (25mm) Rear 25mm @ 0° (25mm) Top n/a Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 97 mm - Minimum 0 mm Weapon Details 3 in Gun M7 L/53 Calibre 76.20mm Length L/53 Number of Rounds  50 Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content AP (AP Armor Piercing) 76.20mm 7Kg 792M/Sec Quoted Penetration 84mm@2000m Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.13 0.26 0.53 1.09 1.7 2.34 3.02 3.74 Penetration(mm@30°) 104 101 95 85 76 68 60 54 Penetration(mm@0°) 120 117 111 99 88 79 70 63 Hit Probability(%) 93 93 90 83 64 52 23 14 Weapon Details 0.5 inch Browning Machine Gun M2 (Machine Gun) Calibre 12.70mm Rate of Fire 480 rpm Number of Rounds  300 Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content MG (AP Standard Small Arms) 12.70mm 0.04Kg 884M/Sec Quoted Penetration 29mm @ 100mtr/0° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.11 0.23 0.45 0.91 1.36 1.81 Penetration(mm@30°) 19 17 15 11 8 6 Penetration(mm@0°) 23 20 18 13 10 7 Hit Probability(%) 74 74 74 70 62 52 About Penetration Figures All penetration figures in this database are calculated to a common standard based on German WWII testing criteria (complete penetration with functioning fuze). This allows direct comparison between all nations' guns. Original national test figures would be higher for some nations due to different criteria: German: 1.00? (baseline - strictest) British: 1.02? (slightly looser) American: 1.05? (50% mass through plate) Soviet: 1.10? (75% mass through plate) For example, a Soviet gun showing 159mm here would be published as ~175mm in Soviet documents, and a German gun showing 120mm would be published as 120mm in German documents. The 159mm figure is directly comparable to the German 120mm - the Soviet gun really was more powerful. National Testing Standards German: 1.00? - Complete penetration, fuze functions (strictest) British: 1.02? - Complete penetration American: 1.05? - 50% of shell mass through plate Soviet: 1.10? - 75% of shell mass through plate All database figures are normalized to German standard for direct comparison. Multiply by the factor above to see original national test figures.

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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