The loaded .338 cartridge is eight.6 mm (0.34 in) in diameter (rim) and ninety three.5 mm (3.sixty eight in) prolonged. It may penetrate much better-than-normal military human body armor at ranges of as much as one,000 metres (one,090 yd), and has a greatest efficient number of about 1,750 metres (one,910 yd) with C.I.P. conforming ammunition at sea degree ailments. Muzzle velocity is dependent on barrel duration, seating depth, and powder charge, and varies from 880 to 915 m/s (2,890 to three,000 ft/s) for professional loads with 16.2-gram (250 gr) bullets, which corresponds to about six,525 J (four,813 ft⋅lbf) of muzzle Power.
British navy issue overpressure .338 Lapua Magnum cartridges with 70 mm (2.8 in) All round size, loaded with sixteen.two-gram (250 gr) LockBase B408 pretty-minimal-drag bullets fired at 936 m/s (3,071 ft/s) muzzle velocity from a L115A3 Very long Range Rifle had been Utilized in November 2009 by British sniper Corporal of Horse (CoH) Craig Harrison to ascertain a completely new record with the longest confirmed sniper kill in fight, at a range of 2,475 m (2,707 yd) (given that damaged).[four] In experiences, CoH Harrison mentions the environmental conditions at Musa Qala read more were perfect for lengthy-variety shooting: no wind, mild weather, and very clear visibility.
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