A term that is sometimes used for oceanic crust rocks is sima, which is short for magnesium silicate, a common component of these rocks. Another term for these undersea igneous rocks is mafic, which comes from the fact that they are high in magnesium and iron. Basalt and gabbro are examples of mafic rocks.
The current record is held by Briton Corporal of Horse (CoH) Craig Harrison, of the UKâs Household Cavalry, who recorded a 2,475 m (2,707 yd) shot (confirmed by GPS) in November 2009, also during the War in Afghanistan, in which he hit two Taliban insurgents consecutively.
The longest sniper kill on record was made by a British corporal in the Blues and Royals called Craig Harrison, who in November 2009 killed two Taliban machine gunners at a range of just over one-and-a-half miles (2,475m). To make a kill at such a range requires more than just a steady hand and a good eye.