Lapua 6mm BR Norma Rifle Brass 100 Piece. Lapuas 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. Specifications for Lapua 6mm BR Norma Rifle Brass: Manufacturer: Lapua Caliber: 6mm Norma BR Brass Quantity: 100 Piece Package Contents: Lapua 6mm BR Norma Rifle Brass Lapua 4PH6046C: 6mm BR Norma Rifle Brass 100 Piece