The loaded .338 cartridge is 8.six mm (0.34 in) in diameter (rim) and 93.five mm (three.68 in) long. It could 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 charge, and varies from 880 to 915 m/s (2,890 to three,000 ft/s) for commercial 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 problem overpressure .338 Lapua Magnum cartridges with 70 mm (2.8 in) Over-all duration, loaded with sixteen.2-gram (250 gr) LockBase B408 really-very low-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 establish a brand new file for that longest verified sniper get rid of in beat, at a range of two,475 m (two,707 yd) (because broken).[four] In reports, read more CoH Harrison mentions the environmental circumstances at Musa Qala had been perfect for extended-selection capturing: no wind, gentle weather conditions, and very clear visibility.
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