Sierra Bullets MatchKing Rifle Bullets 6mm Hollow Point Boat Tail/HPBT 70 grain 500 Bullets/Box. 6mm HPBT Rifle Bullets. Manufactured to Sierra's strict standards these Reloading Bullets designed by Sierra are recognized around the world for record-setting accuracy. While they are recognized around the world for record-setting accuracy MatchKing and Tipped MatchKing bullets are not recommended for most hunting applications. Although MatchKing and Tipped MatchKing bullets are commonly used for varmint hunting their design will not provide the same reliable explosive expansion at equivalent velocities compared to lightly jacketed Hornet Blitz or Varminter counterparts. For a reliable bullet that you can rely on for any application pick Sierra MatchKing 70 gr. 6mm HPBT Rifle & Handgun Bullets. Specifications for Sierra Bullets MatchKing 70 gr. 6mm HPBT Rifle Bullets 500 Count: Manufacturer: Sierra Bullets Gun Type: Rifle Bullet Type: Boat Tail Hollow Point (BTHP) Hollow Point (HP) Bullet Weight: 70 grain Projectile Caliber: .243 Caliber Diameter: 0.243 in Sectional Density: 0.169 Bullet Quantity: 500 Bullet Country of Origin: USA Package Contents: Sierra Bullets MatchKing 70 gr. 6mm HPBT Rifle Bullets 500 Count Sierra Bullets 1505C: MatchKing Rifle Bullets 6mm Hollow Point Boat Tail/HPBT 70 grain 500 Bullets/Box