Lapua 6mm BR Norma Brass The 6mm Norma BR is a popular chambering in match rifles used in 300 meter rifle disciplines, specifically midrange benchrest. Lapua's 6mm BR Norma case is absolutely the best reloading brass in its class and the premium case for bench rest reloading that all others are compared to. Lapua's 6mm Norma BR case has the Small Rifle Primer (SRP) pocket. 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. Desigation: 6 mm BR Norma Caliber: 6 mm (.243) Primer: Small Rifle Primer (SRP) Purpose: Target Product No.: 4PH6046 Box Count: 100