
KV-3Developed on the basis of the KV heavy tank, the vehicle initially had very few differences from the mass-produced model. It underwent field trials in January–February 1941. Eventually, several crucial changes were made to the design, greatly boosting the combat characteristics of the vehicle. By July 22, 1941, chassis and engine development was completed. According to some sources, in the fall of 1941, the vehicle was equipped with a serial KV turret and sent to the front.
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107 mm ZiS-6 (KV-3) (damage per shot: 300):
122 mm D-25T (KV-3) (damage per shot: 390):
555
839
1135
1403








107 mm ZiS-6 (KV-3) (damage per shot: 300):
122 mm D-25T (KV-3) (damage per shot: 390):
Expected
frags:
1.00
Expected
spot
0.85
Expected
defense points
0.82
Expected
winrate
54.15%












Tier VII field modification
available for tier IX-X tanks
Tier VIII field modification
available for tier X tanks
+3% to vehicle hit points
+10% to suspension durability
+5% to hull traverse speed
-7% to maintaining speed when crossing all terrain types
-3% to the aiming circle size
-5% to aiming speed
+3% to view range
+15% to additional stun duration
+10% to stun duration