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Union Soviet Socialist Republics
122mm Gun D-25S L/45

Showing the details of the shells used(where known)
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Weapon Details
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122mm Gun D-25S L/45
(Tank Gun)
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History
This was the 122 mm gun M1931/37 (A-19) in a tank mounting
Manufactured1943 - 1950
Calibre122mm
LengthL/45
Rate of Fire2 rpm
 
OF-471
(APHE Armor Piercing High Explosive)
122mm 25Kg 800M/Sec
Quoted Penetration 120mm @ 500mtr/30° ( ≈ 138mm/0°)
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.25 0.52 1.07 1.66 2.3 2.99 3.73
Penetration(mm@30°) 212 199 185 168 152 137 122 109
Penetration(mm@0°) 245 230 214 194 176 159 142 126
Hit Probability(%) 98 98 98 98 81 57 29 22



OF-471
(HE High Explosive)
122mm 25Kg 800M/Sec 3.600Kg explosive
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.25 0.52 1.07 1.66 2.3 2.99 3.73
Direct Fire
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.13 0.25 0.52 1.07 1.66 2.3 2.99 3.73
Hit Probability(%) 98 98 98 98 81 57 29 22
Blast/Fragmentation Effects
Burst radius Infantry in open 99% kill4 mtr Burst radius Infantry in open 66% kill9 mtr
Burst radius Infantry in open 33% kill24 mtr  Armour Penetration inc roof at 1 mtr10 mm
An explosion within 4 mtr of infantry in the open will cause 99% casualties - lethal.
An explosion within 9 mtr of infantry in the open will cause > 66% casualties and could damage some AFV's.
An explosion within 24 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 penetrate 10 mm of the tank armour including the roof.

Vehicles in our database using this gun
Vehicle NameCommon Name
 IS-2 
 IS-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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