Sierra Bullets MatchKing Rifle Bullets 6.5mm Hollow Point Boat Tail/HPBT 100 grain 500 Bullets/Box. 6.5mm HPBT Rifle Bullets. Ballistic Coefficients and Velocity Ranges is .361 at 1600 fps and above .346 between 1400 and 1600 fps .316 at 1400 fps and below. Specifications for Sierra Bullets MatchKing 100 gr. 6.5mm HPBT Rifle Bullets 500 Count: Manufacturer: Sierra Bullets Gun Type: Rifle Bullet Type: Boat Tail Hollow Point (BTHP) Hollow Point (HP) Bullet Weight: 100 grain Projectile Caliber: .264 Caliber Diameter: 0.264 in Sectional Density: 0.205 Bullet Quantity: 500 Bullet Country of Origin: USA Package Contents: Sierra Bullets MatchKing 100 gr. 6.5mm HPBT Rifle Bullets 500 Count Sierra Bullets 1711C: MatchKing Rifle Bullets 6.5mm Hollow Point Boat Tail/HPBT 100 grain 500 Bullets/Box