ORIGINAL: MineSweeper
Curiously the 25mm had an even shorter effective ceiling than the 13mm...
also from -
http://www.navweaps.com/Weapons/WNJAP_25mm-60_mg.htm
Range
.
Elevation With 0.55 lbs. (0.25 kg) HE Shell
Range @ 45 degrees 7,439 yards (6,800 m)
Range @ 50 degrees 8,200 yards (7,500 m)
AA Ceiling @ 85 degrees Effective: 9,843 feet (3,000 m)
Maximum: 18,040 feet (5,500 m)
Note: The sources listed below disagree as to the ranges and AA ceiling for this weapon. I have chosen to use those given in "Japanese Cruisers of the Pacific War."
That is strange...[&:]
The M2 for comparison's sake...
Range with 1.71 oz (48.5 gm) Bullet
1940's Water-cooled version
.
Range Effective: 2,600 yards (2,400 m)
Maximum: 7,400 yards (6,770 m)
AA Ceiling Effective: about 5,000 feet (1,524 m)
Maximum: about 15,000 feet (4,570 m)
.
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Range with 1.71 oz (48.5 gm) Bullet
Modern Air-cooled Version
.
Range Effective: 2,200 yards (2,000 m)
Maximum: 7,400 yards (6,770 m)