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U.S. 75mm M4 Gun


Specifications:


Bore
2.953"
75 mm
Ammunition type
Fixed HE
Weight of projectile     
14.7 lb
6.67 kg
Velocity 1970 feet per second
600 meters per second
Weight of gun
893 lbs
405 kg


The 75mm M4 gun was mounted on a number of B-25 Mitchell medium bombers. It was essentially an M3 tank gun modified to handle recoil somewhat more gracefully. This was not very successful, as the gun had to be manually reloaded and thus had a dismal rate of fire, and its recoil put great strain on the airframe. The U.S. Air Force eventually turned to rocket armament instead.

References

Williams and Gustin (2003)



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