USS Cassin Young DD-793 - 40mm Anti-Aircraft Guns

 

Range:

Surface(42°): 6mi / 10km

Altitude(90°): 13mi / 21km / 22,000 feet

 

Projectile Weight: 2lbs

 

Rate of fire:

160rds/min(2.6per/sec)  x 4 barrels=640rds/min(11rd/sec) x 2 barrels=320rds/min(5rd/sec)

 

Muzzle Velocity: 2890ft/sec

 

WW2 Configuration:  5 twin mounts

 1950's Configuration: 1 twin Mount and 2 quad mounts