Caliber = 20.0 cm (7.9 inch)
Shell weight = 130 kg (287 lbs)
Muzzle velocity = 808 m/s (2650 fps)
Relative ballistic performance: 0.90
Muzzle energy = 42.414 megajoules = 15629.7 foot-tons
Relative muzzle energy: 1.00
Barrel length: 50 calibers
Elevation Range
Time Velocity Fall Angle
2.5 deg 4900 meters
6.9 sec 624 m/s 3.0 deg
5.0 deg
8400 meters 13.2 sec 520 m/s 6.7 deg
7.5 deg 11200 meters 19.1 sec 454 m/s
11.0 deg
10.0 deg 13500 meters 24.6
sec 411 m/s 15.6 deg
12.5 deg
15500 meters 29.9 sec 383 m/s 20.3 deg
15.0 deg 17200 meters 34.9 sec 364 m/s
25.0 deg
20.0 deg 20000 meters 44.4
sec 346 m/s 33.8 deg
25.0 deg
22200 meters 53.3 sec 343 m/s 41.4 deg
30.0 deg 24000 meters 61.8 sec 348 m/s
47.9 deg
35.0 deg 25300 meters 69.8
sec 357 m/s 53.2 deg
40.0 deg
26200 meters 77.5 sec 369 m/s 57.8 deg
45.0 deg 26500 meters 84.7 sec 381 m/s
61.6 deg
50.0 deg 26200 meters 91.5
sec 393 m/s 65.0 deg
Armor Penetration - Vertical Belt Armor
(Relative armor quality, 0.90)
Maximum penetration: 46.93 cm
Elevation Range
Belt Deck
1.0 deg 2200 meters
40 cm
2.1 deg 4100 meters
35 cm
3.4 deg 6300 meters
30 cm
4.8 deg 8100 meters
... 2 cm
5.4 deg
8900 meters 25 cm
8.4 deg
12100 meters 20 cm
10.2 deg
13700 meters ... 4 cm
13.8 deg 16400 meters 15 cm
17.5 deg 18700 meters ...
6 cm
23.2 deg 21500 meters
... 8 cm
25.7 deg
22500 meters 10 cm
29.3 deg
23800 meters ... 10 cm
35.9 deg 25500 meters ...
12 cm
43.1 deg 26400 meters
... 14 cm
Maximum range = 26500 meters at 45.4 deg elevation