The caliber .50 APIT bullet T4E6, assembled into cartridge T63, has a ballistic coefficient of C5 = .3809, a normal stability factor of 2.28, and a time of flight to 600 yards on the ground, when fired at a muzzle velocity of 3200 fps., of .666 seconds. When fired straight forward from aircraft flying 300 mph. at sea level, the time of flight of this bullet to a future range of 600 yards is .70 seconds, closely matching that of caliber .50 T49 and T48 (i.e., M23). (Author)
Ballistic Tests of Cartridge Caliber .50 APIT, T63
1947
10 pages
Report
No indication
English
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