Russian 37mm/55

Caliber = 3.7 cm (1.5 inch)
Shell weight = 1 kg (2 lbs)
Muzzle velocity = 781 m/s (2561 fps)
Relative ballistic performance: 0.87
Muzzle energy = 0.305 megajoules = 112.4 foot-tons
Relative muzzle energy: 1.14
Barrel length: 55 calibers

Elevation Range Time Velocity Fall Angle
2.5 deg 3100 meters 5.9 sec 366 m/s 4.1 deg
5.0 deg 4500 meters 10.6 sec 261 m/s 10.2 deg
7.5 deg 5400 meters 14.6 sec 215 m/s 17.0 deg
10.0 deg 6100 meters 18.2 sec 190 m/s 24.1 deg
12.5 deg 6600 meters 21.5 sec 177 m/s 30.9 deg
15.0 deg 7000 meters 24.6 sec 170 m/s 37.3 deg
20.0 deg 7700 meters 30.3 sec 166 m/s 48.1 deg
25.0 deg 8100 meters 35.6 sec 168 m/s 56.5 deg
30.0 deg 8300 meters 40.5 sec 173 m/s 62.8 deg
35.0 deg 8500 meters 45.1 sec 179 m/s 67.6 deg
40.0 deg 8400 meters 49.5 sec 184 m/s 71.4 deg
45.0 deg 8300 meters 53.6 sec 189 m/s 74.5 deg
50.0 deg 7900 meters 57.4 sec 193 m/s 76.9 deg

Armor Penetration - Vertical Belt Armor
(Relative armor quality, 0.85)
Maximum penetration: 10.20 cm

Elevation Range Belt Deck
1.4 deg 2100 meters 5 cm

Maximum range = 8500 meters at 36.3 deg elevation
Maximum altitude = 6280m at 80 deg elevation