The loaded .338 cartridge is eight.six mm (0.34 in) in diameter (rim) and 93.five mm (3.sixty eight in) extended. It could penetrate improved-than-common armed forces body armor at ranges of approximately 1,000 metres (1,090 yd), and it has a optimum helpful variety of about 1,750 metres (one,910 yd) with C.I.P. conforming ammunition at read more sea degree circumstances. Muzzle velocity is depending on barrel duration, seating depth, and powder charge, and differs from 880 to 915 m/s (two,890 to three,000 ft/s) for industrial masses with sixteen.two-gram (250 gr) bullets, which corresponds to about 6,525 J (4,813 ft⋅lbf) of muzzle Electrical power.
British armed forces difficulty overpressure .338 Lapua Magnum cartridges with 70 mm (2.8 in) Total duration, loaded with sixteen.two-gram (250 gr) LockBase B408 extremely-very low-drag bullets fired at 936 m/s (three,071 ft/s) muzzle velocity from the L115A3 Long Assortment Rifle were being Utilized in November 2009 by British sniper Corporal of Horse (CoH) Craig Harrison to determine a whole new history for the longest confirmed sniper destroy in overcome, at A selection of two,475 m (two,707 yd) (since broken).[4] In reviews, CoH Harrison mentions the environmental problems at Musa Qala ended up great for extensive-range taking pictures: no wind, gentle temperature, and clear visibility.
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