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Anti-Tank Gun, 25 mm Hotchkiss

Showing the details of the shells used(where known)
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Weapon Details
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Anti-Tank Gun, 25 mm Hotchkiss
(Anti Tank Gun)
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photo of Anti-Tank Gun, 25 mm Hotchkiss from Hotchkiss 15mm Anti Tank from Wikipedia
History
French Anti Tank gun issued to the BEF in 1939 most captured by the Germans at Dunkirk
ManufacturerHotchkiss
Manufactured1939 - 1940
Calibre25mm
LengthL/72
Rate of Fire20 rpm
 
Hotchkiss 25mm
(AP Armor Piercing)
25mm 0.32Kg 950M/Sec
Quoted Penetration 47mm @ 100mtr/0°
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.11 0.23 0.52 1.33 2.78 6.24
Penetration(mm@30°) 40 33 25 16 9 4
Penetration(mm@0°) 47 39 30 19 11 5
Hit Probability(%) 98 98 98 90 39 3

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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