Fiocchi Extrema .308 Winchester 150 Grain Centerfire Rifle Ammo uses the best bullets in the business, from SST, V-Max, Interlock, Sierra Gameking, and Barnes Tipped Triple Shock. Precision brass cases combined with the optimum powders and reliable primers result in world-renown hunting ammunition. Fiocchi Extrema Centerfire Rifle Hunting Loads are tested and qualified daily to ensure you receive ammo that delivers in extreme heat or cold hunting conditions.