The loaded .338 cartridge is eight.six mm (0.34 in) in diameter (rim) and 93.five mm (3.sixty eight in) lengthy. It may possibly penetrate greater-than-regular military services human body armor at ranges of as much as 1,000 metres (one,090 yd), and has a greatest efficient choice of about 1,750 metres (1,910 yd) with C.I.P. conforming ammunition at sea stage circumstances. Muzzle velocity is dependent on barrel duration, seating depth, and powder demand, and varies from 880 to 915 m/s (2,890 to three,000 ft/s) for professional loads with 16.two-gram (250 gr) bullets, which corresponds to about six,525 J (four,813 ft⋅lbf) of muzzle Power.
British armed service issue overpressure .338 Lapua Magnum cartridges with 70 mm (2.8 in) Total duration, loaded with sixteen.two-gram (250 gr) LockBase B408 extremely-lower-drag bullets fired at 936 m/s (three,071 ft/s) muzzle velocity from the L115A3 Long Assortment Rifle ended up Employed in November 2009 by British sniper Corporal of Horse (CoH) Craig Harrison to determine a brand new document to the longest verified sniper eliminate in battle, at An array of two,475 m (two,707 yd) (considering the fact that damaged).[four] In experiences, CoH Harrison mentions the environmental conditions at Musa Qala were perfect for lengthy-variety shooting: check here no wind, mild weather, and distinct visibility.
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