The Sierra GameKing bullet in the Federal Premium Vital-Shok line has a high ballistic coefficient and boat-tail design that flatten its trajectory, while the jacketed lead core delivers rapid expansion and energy release. It's an excellent long-range bullet choice for virtually any medium game species in North America. The precise bullet profile and boat-tail provide match-grade accuracy, mid-range penetration and weight retention. They are made with Gold Medal primers, specially formulated propellant, and nickel-plated brass.