The 7.5cm Pak 40/1 auf RSO (Sf), it was based on the Captured French chassis and was in use from 1944. It was commonly called a Sf. General Details (SP Anti Tank) Specifications Operational Date(s) 1944 Ordnance classification Quantity Produced 0 Weight unknown Crew 4 M.G's small n/a M.G's large(>10mm) n/a Length 4.23 mtr Width 2.22 mtr Height 2.00 mtr Engine Details/Performance Max Road Speed 12 mph Max Cross Country Speed 10 mph Range Road 0 miles Range Cross Country unknown Fuel Type Unknown Fuel Capacity unknown Horse Power 0 hp Power/Weight unknown General Information The 7.5cm Pak 40/1 auf RSO (Sf), it was based on the Captured French chassis and was in use from 1944. It was commonly called a Sf. Its main armament consisted of a 7.5cm Pak 40 L/46 which could penetrate 122.1 mm of flat plate at 800 metres Armour Details Turret Front n/a Side n/a Rear n/a Top n/a Superstructure Front n/a Side n/a Rear n/a Top n/a Hull Front n/a Side n/a Rear n/a Top n/a Armour (x)mm @ (y)° (Effective mm @ 0°) Weapon Details 7.5cm Pak 40 L/46 7.5cm Panzerabwehrkanone 40 L/46 (translates as Anti Tank Gun) History This was an enlarged 5cm Pak 38 so looks very similar, but with improved performance especially against the Russian T34 Manufacturer Rheinmetal-Borsig Manufactured 1941 - 1945 Calibre 75mm Length L/46 Rate of Fire 14 rpm Number of Rounds  15 Ammunition Details Name/Id Calibre Weight MVelocity Explosive Content 7.5cm Pzgr 39 L/48 (AP Armor Piercing) 75mm 6.8Kg 792M/Sec Quoted Penetration 96mm @ 500mtr/30° ( ? 110mm/0?) 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 3.03 3.75 Penetration(mm@30°) 129 125 118 105 94 83 74 66 Penetration(mm@0°) 149 145 137 122 109 97 86 77 Hit Probability(%) 93 93 90 83 64 52 23 14 7.5cm Pzgr 40 (AP40 Armour Piercing Tungsten Cored) 75mm 4.1Kg 920M/Sec Quoted Penetration 115mm @ 500mtr/30° ( ? 132mm/0?) Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.11 0.22 0.45 0.93 1.44 1.98 2.55 3.15 Penetration(mm@30°) 145 142 135 122 111 100 91 82 Penetration(mm@0°) 169 164 156 142 128 116 105 95 Hit Probability(%) 93 93 93 87 77 64 35 23 7.5cm Sprgr 34 (HE High Explosive) 75mm 5.8Kg 548M/Sec 0.640Kg explosive Maximum Range not shown as gun elevation is limited Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.18 0.37 0.76 1.58 2.45 3.38 4.37 5.41 lateral dispersion means the side to side variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.12 0.12 0.12 0.21 0.32 0.43 0.53 0.64 80% of shells land within +/- (mtr) 0.15 0.15 0.15 0.27 0.41 0.55 0.68 0.82 95% of shells land within +/- (mtr) 0.24 0.24 0.24 0.41 0.63 0.84 1.04 1.25 range dispersion means the back to front variation of the shell from the aiming point 50%(CEP) of shells land within +/- (mtr) 0.15 0.15 0.15 0.27 0.40 0.53 0.67 0.80 80% of shells land within +/- (mtr) 0.19 0.19 0.19 0.35 0.51 0.68 0.86 1.02 95% of shells land within +/- (mtr) 0.29 0.29 0.29 0.53 0.78 1.04 1.31 1.57 Direct Fire Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.18 0.37 0.77 1.61 2.54 3.53 4.6 Hit Probability(%) 93 93 90 64 35 14 8 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 17 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 17 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. 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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