Barnes Varmint Grenade Rifle Bullets 6mm Creedmoor Flat Base Hollow Point 62 grain 250 Bullets/Box Powdered Copper/Tin. The bullet remains intact at ultra-high velocities in fast twist barrels while its highly frangible core fragments violently on impact. The bullet produces instant fragmentation virtually vaporizing ground squirrels and prairie dogs even at long range. The Grenade produces instant fragmentation almost always expelling their energy seldom exiting larger predators like bobcats and coyotes leaving valuable pelts virtually undamaged. No matter what model or caliber you end up choosing they all feature a unique double-diameter double-threaded design just inside the case that allows hunters to convert a case-seated bullet to a handgun cartridge simply by turning the release sizing screw on the case-head release sizing screw to a telescopic handgun cartridge. Specifications for Barnes Varmint Grenade 6mm Rifle Bullets: Manufacturer: Barnes Gun Type: Rifle Bullet Type: Flat Base Hollow Point (FBHP) Hollow Point (HP) Bullet Weight: 62 grain Projectile Caliber: .243 Caliber Diameter: 0.243 in G7 Ballistic Coefficient: 0.199 Sectional Density: 0.15 Core Material: Powdered Copper/Tin Jacket Material: Copper Country of Origin: USA Package Contents: Barnes Varmint Grenade 6mm Rifle Bullets Barnes 30217: Varmint Grenade Rifle Bullets 6mm Creedmoor Flat Base Hollow Point (FBHP) 62 grain 250 Bullets/Box Powdered Copper/Tin