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United States' 40 mm Bofors Anti-Aircraft

 

  40 mm Bofors Anti-Aircraft1,2
Bore 1.575"1
40 mm1,2,3
Caliber  
Length of gun 7' 4.5"2
Length of bore  
Rifling  
Length of rifling  
Weight traveling  
Weight in action 5,491 lb1, 5,549 lb2
2,517 kg1
Elevation 90°2
Traverse 360°2
Muzzle Velocity 2,870'/sec2, 2,890'/sec3
Range of shell 11,000 yards3
Ceiling of fire 11,000'1, 17,500'2
3,353 m1
Shell weight 1.96 lb2, 1.985 lb3, 2 lb1
0.9 kg1
Rate of fire 120 rpm1, 160 rpm3
Armor penetration  
Breech mechanism  

Sources:

  1. US Army Handbook 1939-1945, George Forty, 1995
  2. Allied Artillery of World War Two, Ian V. Hogg, 1998
  3. US Navy Aircraft Carriers 1922-45 Prewar Class, Mark Stille, 2005
20th Century American Military History Crucial Site