Lapua 284 Winchester Rifle Brass 100 Piece. 284 Winchester cartridge with its Large Rifle Primer has experienced a recent resurgence in F-Class competition where shooters compete to distances out to 1000 m/yards. Members of the US Rifle Team which Lapua sponsors will enjoy having brass readily available in this classic cartridge. The .284 Winchesters rebated rim design enables a larger powder column yet easily functions through medium length actions making this cartridge case very desirable for custom rifles. Its accuracy potential and high muzzle velocity is also recognized in hunting fields where this cartridge performs nicely on a very wide scale. Specifications for Lapua 284 Winchester Rifle Brass: Manufacturer: Lapua Caliber: .284 Winchester Brass Quantity: 100 Piece Package Contents: Lapua 284 Winchester Rifle Brass Lapua 4PH7284C: 284 Winchester Rifle Brass 100 Piece