Italy Cannone contracarro da 47/32 M39 L/32

Showing the details of the shells used(where known)   Tweet Weapon Details Cannone contracarro da 47/32 M39 L/32 (Machine Gun) History This was the Austrian 4.7cm Bohler L/39 manufactured under licence, and was used in all theatres till Italy surrendered. Manufactured 1939 - 1943 Calibre 47mm Length L/32   47 x 195/227 mm R L/32 (AP Armor Piercing) 47mm 1.6Kg 630M/Sec Quoted Penetration 58mm @ 100mtr/30° ( ≈ 66mm/0°) Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.16 0.33 0.69 1.53 2.56 3.86 5.53 7.79 Penetration(mm@30°) 54 50 44 37 30 24 19 14 Penetration(mm@0°) 63 58 51 43 35 28 22 17 Hit Probability(%) 98 98 98 85 44 22 3 2 Bohler HE (HE High Explosive) 47mm 2.37Kg 250M/Sec ≈0.356Kg explosive Maximum Range 7000 Mtr Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.41 0.84 1.75 3.86 6.45 9.72 13.94 19.68 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.41 0.84 1.75 3.86 6.45 9.72 13.94 19.68 Hit Probability(%) 98 98 77 22 3 1 0 0 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 3 mtr Burst radius Infantry in open 66% kill 6 mtr Burst radius Infantry in open 33% kill 15 mtr  Armour Penetration inc roof at 1 mtr 1 mm An explosion within 3 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 6 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 15 mtr of infantry in the open will cause 33% casualties. The blast effect of this shell exploding within 1 mtr of an armoured vehicle will penetrate 1 mm of the tank armour including the roof. Bohler HEAT (HEAT High Explosive Anti-Tank) 47mm 2.37Kg 250M/Sec Quoted Penetration 55mm @ 0mtr/0° Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.41 0.84 1.75 3.86 6.45 9.72 Penetration(mm@30°) 55 55 55 55 55 55 Penetration(mm@0°) 55 55 55 55 55 55 Hit Probability(%) 98 98 77 22 3 1

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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