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Germany - 2.0cm KwK 30 L/55
2.0cm Kampfwagenkanone 30 L/55
(translates as Tank Gun)

Showing the details of the shells used(where known)
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Weapon Details
Flag
2.0cm KwK 30 L/55
2.0cm Kampfwagenkanone 30 L/55
(translates as Tank Gun)
Blank
History
Used on the Panzer II.
ManufacturerMauser and Rheinmetall-Borsig
Manufactured1935 - 1945
Calibre20mm
LengthL/55
Rate of Fire120 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
 PzKpfw II Ausf a1,a2,a3Panzer II 
 PzKpfw II Ausf bPanzer II 
 PzKpfw II Ausf cPanzer II 
 SdKfz 231 Schwere PanzerspƤhwagen6 rad - Daimler Benz/Bussing NAG 
 SdKfz 232 Schwere PanzerspƤhwagen6 rad - Daimler Benz/Bussing NAG 
 

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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