Sierra 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 hunting, their design doesn't offer the same reliable explosive expansion in varmints compared to alternatives like lightly jacketed Hornet, Blitz, or Varminter bullets. Introduced in 1984 as the #1380, this bullet necessitates a barrel twist rate of 1x10 or faster.