Sierra Bullets .264 Caliber 130 Grain BTHP Tipped GameKing 100 Rifle Bullets. Sierra re-engineered their legendary MatchKing bullet into a hollow point design for quick expansion and fitted it with a transparent green tip for ballistic uniformity. Inside the GameChanger features a unique construction that utilizes a special lead alloy surrounded by a tough copper jacket that delivers excellent penetration and expansion at a variety of ranges. It's a GameChanger on any hunt This is not loaded ammunition. This bullet requires a barrel twist rate of 1 8" or faster. (4330T) Specifications for Sierra Bullets .264 Caliber 130 Grain BTHP Tipped GameKing 100 Rifle Bullets: Manufacturer: Sierra Bullets Bullet Type: Hollow Point (HP) Spitzer Boat Tail (SBT) Bullet Weight: 130 grain Projectile Caliber: .264 Caliber Sectional Density: 0.266 Bullet Quantity: 100 Bullet Barrel Twist Rate: 1-8 Country of Origin: USA Fabric/Material: Copper Features of Sierra .264 Caliber 130 Grain BTHP Tipped GameKing 100 Rifle Bullets: Optimal jacket wall thickness controls expansion and retains weight Open pocket under the polymer tip expands lead core instantly on impact Tuned ogive for industry-leading BC Boat tail design for stable flight and accuracy Package Contents: Sierra Bullets 4330 Tipped GameKing 6.5mm .264 130 GR Boat Tail Hollow Point (BTHP) 100 Sierra Bullets 4330 Tipped GameKing 6.5mm .264 130 GR Boat Tail Hollow Point BTHP 100