Britain Ordnance Q.F. 2pdr

Showing the details of the shells used(where known)   Tweet Weapon Details Ordnance Q.F. 2pdr (Anti Tank Gun) History Used both as an Anti Tank gun and as a Tank gun the 2pdr was first used in Belgium in 1939. The majority of the British guns were captured by the Germans at Dunkirk. However the 2pdr manufacture was continued but was slowly replaced by the 6pdr from 1942. Manufactured 1936 - 1944 Calibre 40mm Length L/50 Rate of Fire 22 rpm   AP/T Mk I (AP Armor Piercing) 40mm 1.08Kg 792M/Sec Quoted Penetration 53mm@455m Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.13 0.27 0.56 1.26 2.17 3.37 5.06 7.58 Penetration(mm@30°) 64 58 51 41 33 25 19 13 Penetration(mm@0°) 74 67 59 48 39 30 22 16 Hit Probability(%) 98 98 98 93 60 25 6 2 HE/T Mk II after 1942 (HE High Explosive) 40mm 0.86Kg 792M/Sec 0.085Kg explosive Maximum Range not shown as gun elevation is limited Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.13 0.27 0.56 1.26 2.17 3.37 5.06 7.59 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.13 0.27 0.56 1.26 2.17 3.37 5.06 7.59 Hit Probability(%) 98 98 98 93 60 25 6 2 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 1 mtr Burst radius Infantry in open 66% kill 3 mtr Burst radius Infantry in open 33% kill 9 mtr  Armour Penetration inc roof at 1 mtr 0 mm An explosion within 1 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 3 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 9 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 not cause any significant armour damage. Vehicles in our database using this gun Vehicle Name Common Name   AEC Armoured Car Mark I     Cruiser Mk I A9     Cruiser Mk II A10     Cruiser Mk IIA A10     Cruiser Mk III A13     Cruiser Mk IV A13 Mk II     Cruiser Mk IVA A13 Mk II     Cruiser Mk V Covenanter I     Cruiser Mk V Covenanter II     Cruiser Mk V Covenanter III     Cruiser Mk V Covenanter IV     Cruiser Mk VI Crusader I     Cruiser Mk VI Crusader II     Daimler Armoured Car MkI, II     Inf Tank Mk II Matilda II A12     Inf Tank Mk II Matilda III     Inf Tank Mk II Matilda IV     Inf Tank Mk II Matilda V     Inf Tank Mk III Valentine II     Inf Tank Mk III Valentine III     Inf Tank Mk III Valentine IV     Inf Tank Mk III Valentine V     Inf Tank Mk III Valentine VI         Inf Tank Mk III Valentine     Light Tank Mk VII Tetrarch Tetrarch     Light Tank Mk VIII Harry Hopkins     Vickers Mk I     Vickers Mk IIA     Inf Tank Mk IV Churchill 1 - I     Inf Tank Mk IV Churchill 2 - II     Ram Mk I     Inf Tank Mk IV Churchill 1 - I     Inf Tank Mk IV Churchill 2 - II

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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