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Germany - 2.0cm Kwk 38 L/55
2.0cm Kampfwagenkanone 38 L/55
(translates as Tank Gun)

Showing the details of the shells used(where known)
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Weapon Details
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2.0cm Kwk 38 L/55
2.0cm Kampfwagenkanone 38 L/55
(translates as Tank Gun)
Blank
History
Improved version of the 2.0cm KwK 30 L/55 used on the Panzer II Ausf J and onward
Manufactured1940 - 1945
Calibre20mm
LengthL/55
Rate of Fire220 rpm
 
2.0cm PzGr 39(AP)
20mm 0.12Kg 899M/Sec
Quoted Penetration 23mm @ 100mtr/30° ( ≈ 26mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.12 0.25 0.59 1.68
Penetration(mm@30°) 18 13 9 5
Penetration(mm@0°) 21 16 11 6
Hit Probability(%) 98 98 98 81


 
2.0cm PzGr 40(APCR)
20mm 0.115Kg 1060M/Sec
Quoted Penetration 40mm @ 100mtr/0° ( ≈ 40mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.1 0.21 0.47 1.26 2.88 7.67
Penetration(mm@30°) 35 31 25 17 10 4
Penetration(mm@0°) 41 36 30 20 12 5
Hit Probability(%) 98 98 98 93 34 2



2 cm Sprgr. 39(HE)
20mm 0.132Kg 995M/Sec 0.006Kg explosive
Maximum Range 2000 Mtr
Range(Mtr)10002000300040005000600070008000
Flight Time(Secs) 2.03
Burst radius Infantry in open 99% kill0 mtr Burst radius Infantry in open 66% kill0 mtr
Burst radius Infantry in open 33% kill1 mtr  Armour Penetration inc roof at 1 mtr0 mm
An explosion within 0 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 1 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 NameCommon Name
 2cm Kwk L/55 Gw 38(t) Aufklarungspanzer 
 PzKpfw II Ausf A,B,CPanzer II 
 PzKpfw II Ausf D,EPanzer II 
 PzKpfw II Ausf FPanzer II 
 PzKpfw II Ausf JPanzer II 
 PzKpfw II Ausf LLuchs 
 SdKfz 250/ 9 2cm KwK38Armoured Reconnaissance Vehicle 
 SdKfz 251/23 Ausf D Armoured Reconnaissance VehicleHanomag 
 SdKfz 222 
 SdKfz 231 Schwere PanzerspƤhwagen8 rad 
 SdKfz 232 Schwere Panzerspähwagen8rad 
 SdKfz 234/1 
 

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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