The 338 lapua brass is a rimless, bottlenecked, centerfire rifle cartridge. It was developed during the 1980s as a high-powered, long-range cartridge for military snipers.
In addition to its military role, it is increasingly used by hunters and civilian long-range shooting enthusiasts. The .338 Lapua brass
Magnum is capable of taking down any big game animal, though its suitability for some dangerous game (Cape buffalo, hippopotamus, white rhinoceros, and elephant) is arguable, unless accompanied by a larger “backup” caliber: “There is a huge difference between calibers that will kill an elephant and those that can be relied upon to stop one.”In Namibia the .338 Lapua Magnum is legal for hunting Africa’s big five game if the loads have at least 5,400 J (3,983 ft⋅lbf) muzzle energy.