The SK Biathlon Sport cartridge is a result of innovative engineering and a long history of close co-operation with top biathletes. The SK Biathlon bullet has ideal velocity for frigid conditions, and it is designed for optimum ballistic performance even in tough and windy shooting conditions. The SK Biathlon Sport round has a special lubricant designed specifically for perfect shooting performance in freezing weather. This biathlon ammunition combines effective and reliable energy with the finest match standard accuracy. The SK headstamp is the true sign of quality rimfire ammunition.