The .338 Lapua Magnum is a rimless, bottlenecked, centerfire rifle cartridge. It was developed during the 1980s as a high-powered, long-range cartridge for military snipers. Due to its use in the War in Afghanistan and the Iraq War, the cartridge has become widely available.
.338 Lapua Magnum cartridge next to a .338 Norma Magnum
Left to right; .308 Winchester (7.62×51mm NATO), .300 Winchester Magnum (7.62×67 mm) and .338 Lapua Magnum (8.6×70 mm) cartridges showing their dimensional differences
A Royal Dutch Marine ejects a shell casing from his Accuracy International .338 Lapua Magnum sniper rifle
IDF Barak 338 - a militarized H-S Precision Pro Series 2000 HTR in .338 Lapua Magnum caliber
Accuracy International AWM
The Accuracy International AWM is a bolt-action sniper rifle manufactured by Accuracy International designed for magnum rifle cartridges. The Accuracy International AWM is also unofficially known as the AWSM, which typically denotes AWM rifles chambered in .338 Lapua Magnum.
Accuracy International AWM sniper rifle with several mounting interface kits
A Dutch ISAF sniper team with an Accuracy International AWM .338 Lapua Magnum rifle.
A British sniper (centre) carrying his L115A3 Long Range Rifle with attached suppressor, on a joint training mission with French snipers.
Schmidt & Bender 5-25×56 PM II LP telescopic sight, similar to the sight used by Harrison, and its adjustment controls