The Sierra Matchking Bullets – 30 Cal / .308″ 155gr TMK is a pack of 100 bullets ideal for reloading .308″ and similar calibres. MatchKing are competition bullets, they have a design that provides a high ballistic coefficient, are highly accurate over a longer range and have been used by many competitors to set world records. Sierra enhanced their Matchking line with the Tipped Matchking by adding the acetal resin tip, significantly reducing drag.