United States 75 mm Gun Motor Carriage M3

Tweet The 75 mm Gun Motor Carriage M3 based on the existing SP Gun and was in use from 1944. General Details Specifications Operational Date(s) 1944 Ordnance classification Quantity Produced 2200 Weight unknown Crew 5 M.G's small n/a M.G's large(>10mm) n/a Length 6.31 mtr Width 2.18 mtr Height 2.49 mtr Engine Details/Performance Max Road Speed 45 mph Max Cross Country Speed 35 mph Range Road 200 miles Range Cross Country unknown Fuel Type Petrol Fuel Capacity 60 gal Horse Power 128 hp Power/Weight unknown General Information The 75 mm Gun Motor Carriage M3 based on the existing SP Gun and was in use from 1944. Its main armament consisted of a 75mm Gun M1897A which could penetrate 112 mm of flat plate at 200 metres Armour Details Turret Front n/a Side n/a Rear n/a Top n/a Superstructure Front 12mm @ 0° (12mm) Side 6mm @ 0° (6mm) Rear 6mm @ 0° (6mm) Top n/a Hull Front 12mm @ 0° (12mm) Side 6mm @ 0° (6mm) Rear 6mm @ 0° (6mm) Top n/a Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 12 mm - Minimum n/a mm Weapon Details 75mm Gun M1897A Manufactured 1934 - unknown Calibre 75mm   Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content AP (AP Armor Piercing) 75mm 6.7Kg 645M/Sec Quoted Penetration 76mm@1000m Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.16 0.32 0.66 1.39 2.21 3.15 4.23 5.47 Penetration(mm@30°) 104 96 88 77 67 58 50 41 Penetration(mm@0°) 121 112 102 90 78 68 58 48 Hit Probability(%) 98 98 98 90 57 25 15 6

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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