Russian 254mm/50 Model 1908
Caliber = 25.4 cm (10.0 inch)
Shell weight = 225 kg (496 lbs)
Muzzle velocity = 879 m/s (2882 fps)
Relative ballistic performance: 0.75
Muzzle energy = 86.881 megajoules = 32015.6 foot-tons
Relative muzzle energy: 1.00
Barrel length: 50 calibers
Elevation Range
Time Velocity Fall Angle
2.5 deg 5500 meters
7.4 sec 635 m/s 3.1 deg
5.0 deg
9200 meters 14.0 sec 513 m/s 7.1 deg
7.5 deg 12100 meters 20.1 sec 441 m/s
11.8 deg
10.0 deg 14400 meters 25.8
sec 396 m/s 16.8 deg
12.5 deg
16300 meters 31.2 sec 368 m/s 21.9 deg
15.0 deg 17900 meters 36.3 sec 350 m/s
26.8 deg
20.0 deg 20700 meters 45.9
sec 334 m/s 35.9 deg
25.0 deg
22900 meters 55.0 sec 333 m/s 43.7 deg
30.0 deg 24700 meters 63.6 sec 340 m/s
50.1 deg
35.0 deg 26000 meters 71.8
sec 350 m/s 55.3 deg
40.0 deg
26800 meters 79.7 sec 362 m/s 59.7 deg
45.0 deg 27200 meters 87.1 sec 375 m/s
63.3 deg
50.0 deg 27000 meters 94.1
sec 387 m/s 66.5 deg
Armor Penetration - Vertical Belt Armor
(Relative armor quality, 1.00)
Maximum penetration: 51.79 cm
Elevation Range
Belt Deck
1.3 deg 3200 meters
40 cm
2.2 deg 4900 meters
35 cm
3.3 deg 6800 meters
30 cm
4.5 deg 8600 meters
... 2 cm
5.0 deg
9200 meters 25 cm
7.5 deg
12100 meters 20 cm
10.1 deg
14400 meters ... 4 cm
12.1 deg 16000 meters 15 cm
17.1 deg 19200 meters ...
6 cm
22.2 deg 21700 meters
10 cm
23.0 deg 22100 meters
... 8 cm
29.3 deg
24400 meters ... 10 cm
36.1 deg 26200 meters ...
12 cm
43.8 deg 27200 meters
... 14 cm
Maximum range = 27200 meters at 45.6 deg elevation
