Sierra Matchking .22 Cal (.224) 69GR 500 PackSierra MatchKing . 22 Cal (. 224) Hi Vel 69 gr. HPBT Match Box 500 is specifically engineered for Service Rifle competitions with the M16A2 AR 15A2. Renowned for their performance, these 22 caliber bullets have set numerous national records. While celebrated for their unparalleled accuracy worldwide, it's important to note that MatchKing and Tipped MatchKing bullets aren't ideal for most hunting scenarios. While they're occasionally used for varmint