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Germany
2.0cm Flak 28 Oerlikon L/70
2.0cm Flugabwehrkanone 28 Oerlikon L/70
(translates as Anti Aircraft Gun)

Showing the details of the shells used(where known)
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Weapon Details
2.0cm Flak 28 Oerlikon L/70
2.0cm Flugabwehrkanone 28 Oerlikon L/70
(translates as Anti Aircraft Gun)
Blank
Manufactured1927 - 1945
Calibre20mm
LengthL/70
Rate of Fire280rpm
 
20x101RB
(HE High Explosive)
20mm 0.13Kg 750M/Sec ≈0.02Kg explosive
Maximum Range 914 Mtr
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.14 0.3 0.67 1.79 4
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.14 0.3 0.67 1.79 4 10.95
Hit Probability(%) 98 98 98 77 22 0
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill1 mtr Burst radius Infantry in open 66% kill2 mtr
Burst radius Infantry in open 33% kill7 mtr  Armour Penetration inc roof at 1 mtr0 mm
An explosion within 1 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 2 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 7 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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