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 entire body armor at ranges of up to 1,000 metres (one,090 yd), and has a greatest efficient choice of about one,750 metres (1,910 yd) with C.I.P. conforming ammunition at sea stage conditions. Muzzle velocity is dependent on barrel size, seating depth, here 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) 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 Lengthy Selection 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 eliminate in beat, at a range of two,475 m (two,707 yd) (since damaged).[four] In experiences, CoH Harrison mentions the environmental conditions at Musa Qala were perfect for extended-selection taking pictures: no wind, delicate temperature, and very clear visibility.
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