Showing the details of the shells used(where known)   Tweet Weapon Details Ordnance Q.F. 25pdr Mk 2 (Field Gun) Manufactured 1940 - 2018 Calibre 87mm Length L/27 Rate of Fire 8 rpm 25pdr AP (AP Armor Piercing) 87mm 11.3Kg 518M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.2 0.4 0.81 1.71 2.68 3.74 4.87 6.07 Penetration(mm@30°) 80 77 71 61 52 45 38 33 Penetration(mm@0°) 93 89 83 71 61 52 45 39 Hit Probability(%) 98 98 92 68 37 15 8 3 25pdr Supercharge (AP Armor Piercing) 87mm 11.3Kg 564M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.18 0.36 0.74 1.56 2.44 3.38 4.4 5.47 Penetration(mm@30°) 90 87 81 71 61 53 46 40 Penetration(mm@0°) 105 101 94 82 71 62 54 47 Hit Probability(%) 98 98 95 77 55 25 8 3 25pdr HE (HE High Explosive) 87mm 11.5Kg 532M/Sec 0.793Kg explosive Maximum Range 8000 Mtr Range(Mtr) 1000 2000 3000 4000 5000 6000 7000 8000 Flight Time(Secs) 2.04 4.4 7.07 10.01 13.22 16.64 20.26 24.03 lateral dispersion means the side to side variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.27 0.53 0.80 1.07 1.33 1.60 1.87 2.13 80% of shells land within +/- (mtr) 0.35 0.68 1.02 1.37 1.70 2.05 2.39 2.73 95% of shells land within +/- (mtr) 0.53 1.04 1.57 2.10 2.61 3.14 3.67 4.17 range dispersion means the back to front variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.33 0.67 1.00 1.33 1.67 2.00 2.33 2.67 80% of shells land within +/- (mtr) 0.42 0.86 1.28 1.70 2.14 2.56 2.98 3.42 95% of shells land within +/- (mtr) 0.65 1.31 1.96 2.61 3.27 3.92 4.57 5.23 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.19 0.38 0.79 1.64 2.56 3.55 4.61 Hit Probability(%) 98 98 95 68 37 15 8 Blast/Fragmentation Effects Burst radius Infantry in open 99% kill 2 mtr Burst radius Infantry in open 66% kill 5 mtr Burst radius Infantry in open 33% kill 13 mtr  Armour Penetration inc roof at 1 mtr 2 mm An explosion within 2 mtr of infantry in the open will cause 99% casualties - lethal. An explosion within 5 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's. An explosion within 13 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 2 mm of the tank armour including the roof. Vehicles in our database using this gun Vehicle Name Common Name   Bishop 25 pdr Bishop     Sexton 25pdr Sexton

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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