The Sierra MatchKing .30 caliber (.308 diameter) 220-grain Hollow Point Boat Tail (HPBT) bullet is a precision-engineered reloading component designed for accuracy and consistency. Commonly used by competitive shooters and long-range enthusiasts, this heavy-for-caliber MatchKing bullet features a hollow point design for improved aerodynamics and a boat tail base that enhances stability and reduces drag in flight. Manufactured by Sierra Bullets, it is widely regarded for its tight tolerances and reliable performance in precision rifle applications..