Sierra Matchking .30 CAL/7.62MM (.308) 220GR 100 PackExperience unmatched precision and world class performance with the Sierra MatchKing . 30 Cal 7. 62mm (. 308) 220 gr. HPBT Match Box 100 MatchKings. Renowned as the pinnacle of the Sierra bullet family, these MatchKings have been trusted by competitive shooters worldwide for decades, boasting a legacy of state, national, and world records. Sierra MatchKing bullets have set the gold standard for consistent accuracy across handguns and rifles.