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Germany
4.2cm Le. Pak 41
4.2cm Le. Panzerabwehrkanone 41
(translates as Anti Tank Gun)

Showing the details of the shells used(where known)
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Weapon Details
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4.2cm Le. Pak 41
4.2cm Le. Panzerabwehrkanone 41
(translates as Anti Tank Gun)
Blank
photo of 4.2cm Le. Pak 41 from Wikipedia
History
This was another of the squeeze bore Anti Tank guns with powerful performance, but became obsolete when the Tungsten supplies ran short in 1942. It was mounted on the same carriage as the 3.7cm Pak 35/36.
Manufactured1941 - 1942
Calibre42mm
LengthL/50
Rate of Fire12 rpm
 
4.2cm Pzgr Patr 41
(AP40 Armour Piercing Tungsten Cored)
42mm 0.34Kg 1265M/Sec
Quoted Penetration 72mm @ 500mtr/30° ( ≈ 83mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.08 0.17 0.38 0.97 1.99 4.18 12.14
Penetration(mm@30°) 96 85 71 51 34 19 7
Penetration(mm@0°) 111 99 83 60 40 23 9
Hit Probability(%) 98 98 98 98 69 15 0



4.2cm Sprgr Patr 41
(HE High Explosive)
42mm 0.28Kg 1265M/Sec ≈0.042Kg explosive
Maximum Range not shown as gun elevation is limited
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.08 0.17 0.38 0.97 1.99
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.08 0.17 0.38 0.97 1.99 4.19 12.17
Hit Probability(%) 98 98 98 98 69 15 0
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill2 mtr Burst radius Infantry in open 66% kill5 mtr
Burst radius Infantry in open 33% kill14 mtr  Armour Penetration inc roof at 1 mtr0 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 14 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.

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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