Federal Fusion, 224 Valkyrie, 90 Grain, Boat tail, 20 Round Box F224VLKMSR1 The modern sporting rifle isn't just some gun. It's a highly adapted hunting machine, and it needs ammunition that's just as customized: Fusion(R) MSR. From primer to projectile, virtually every component is optimized for use in modern sporting rifles and peak ballistic performance through short barrels.