Every individual Weatherby Centerfire Rifle Ammunition cartridge is made using custom components allowing for devastating downrange power as well as truly impressive speed. The ammunition is loaded with Norma Precision Brass specialty primers and Norma High Grade Premium Powder by Norma of Sweden. This allows for the powder to be consistently ignited. With this ammunition Weatherby guarantees that you will be able to shoot a 100-yard group shot that is better than your previous one. The boxes include 20 rounds and there are several options of bullet styles to choose from including Spitzer Nosler Ballistic Tip Round Nose Nosler AccuBond Barnes TSX and Spire Point.