The .300 Norma Magnum is a recent development based on the .338 Norma Magnum necked down to .30 caliber. The .300 Norma Magnum was adopted as the US military's Advanced Sniper Cartridge "for extra long ranges beyond 1 500 meters". In addition to its military duties, the .300 Norma brass is sure to find favor with Long Range competitive shooters and hunters. We are pleased to offer long range accuracy reloaders this impressive rifle case in our line of premium brass cases. Lapua's .300 Norma Magnum brass case takes the Large Rifle Primer (LRP). It is available in the new cardboard 100 pcs Lapua brass box. The brand new case box has been designed to keep Lapua brass in pristine condition during shipping, ensuring that your reloading experience is on the best level.