The .338 Lapua Magnum (eight.six×70 mm or eight.fifty eight×70 mm) is really a rimless, bottlenecked, centerfire rifle cartridge. It was designed in the nineteen eighties as a higher-powered, lengthy-variety cartridge for armed forces snipers. On account of its use from the War in Afghanistan plus the Iraq War, the cartridge has grown to be commonly readily available.
The loaded .338 cartridge is eight.6 mm (0.34 in) in diameter (rim) and 93.5 mm (three.sixty eight in) very long. It could possibly penetrate superior-than-common navy human body armor at ranges of around 1,000 metres (one,090 yd), and it has a highest successful selection of about one,750 metres (one,910 yd) with C.I.P. conforming ammunition at sea degree conditions. Muzzle velocity is depending on barrel size, seating depth, and powder charge, and may differ from 880 to 915 m/s (2,890 to 3,000 ft/s) for professional masses with 16.two-gram (250 gr) bullets, which corresponds to about 6,525 J (four,813 ft⋅lbf) of muzzle Electricity.
British navy problem overpressure .338 Lapua Magnum cartridges with 70 mm (two.8 in) overall duration, loaded with 16.two-gram (250 gr) LockBase B408 quite-reduced-drag bullets fired at 936 m/s (three,071 ft/s) muzzle velocity from a L115A3 Long Array Rifle had been Employed in November 2009 by British sniper Corporal of Horse (CoH) Craig Harrison to ascertain a brand new history to the longest verified sniper get rid of in overcome, at a range of two,475 m (two,707 yd) (considering that broken).[4] In reports, CoH Harrison mentions the environmental problems at Musa Qala had been ideal more info for lengthy-array shooting: no wind, delicate weather, and obvious visibility.
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