Russian 305mm/52
Caliber = 30.5 cm (12.0 inch)
Shell weight = 471 kg (1038 lbs)
Muzzle velocity = 820 m/s (2691 fps)
Relative ballistic performance: 0.85
Muzzle energy = 158.5 megajoules = 58407.2 foot-tons
Relative muzzle energy: 1.05
Barrel length: 52 calibers
Elevation Range
Time Velocity Fall Angle
2.5 deg 5300 meters
7.1 sec 678 m/s 2.9 deg
5.0 deg
9400 meters 13.7 sec 587 m/s 6.2 deg
7.5 deg 12800 meters 20.0 sec 525 m/s
10.1 deg
10.0 deg 15700 meters 26.0
sec 482 m/s 14.2 deg
12.5 deg
18300 meters 31.7 sec 452 m/s 18.4 deg
15.0 deg 20500 meters 37.2 sec 432 m/s
22.6 deg
20.0 deg 24300 meters 47.7
sec 411 m/s 30.8 deg
25.0 deg
27400 meters 57.6 sec 406 m/s 38.0 deg
30.0 deg 29900 meters 67.1 sec 411 m/s
44.3 deg
35.0 deg 31800 meters 76.1
sec 421 m/s 49.5 deg
40.0 deg
33100 meters 84.6 sec 434 m/s 54.1 deg
45.0 deg 33700 meters 92.7 sec 448 m/s
58.1 deg
50.0 deg 33500 meters 100.3 sec
462 m/s 61.7 deg
Armor Penetration - Vertical Belt Armor
(Relative armor quality, 0.90)
Maximum penetration: 74.10 cm
Elevation Range
Belt Deck
1.2 deg 2700 meters
65 cm
2.0 deg 4300 meters
60 cm
3.0 deg 6200 meters
55 cm
3.0 deg 6200 meters
... 2 cm
4.2 deg
8100 meters 50 cm
5.6 deg
10300 meters 45 cm 4 cm
7.5 deg 12800 meters 40 cm
8.6 deg 14100 meters ...
6 cm
10.0 deg 15700 meters
35 cm
12.2 deg 18000 meters
... 8 cm
13.5 deg
19200 meters 30 cm
16.9 deg
22000 meters ... 10 cm
18.8 deg 23400 meters 25 cm
20.0 deg 24300 meters ...
12 cm
23.1 deg 26300 meters
... 14 cm
26.3 deg
28100 meters ... 16 cm
27.4 deg 28700 meters 20 cm
29.7 deg 29700 meters ...
18 cm
33.1 deg 31100 meters
... 20 cm
36.6 deg
32300 meters ... 22 cm
40.2 deg 33100 meters ...
24 cm
42.1 deg 33500 meters
15 cm
43.9 deg 33700 meters
... 26 cm
47.8 deg
33700 meters ... 28 cm
Maximum range = 33800 meters at 46.4 deg elevation
