Doubletap Ammunition Lead Free .270 Winchester 130 grain Solid Copper 20 Rounds Rifle Ammo. 100percent weight retention and extreme expansion make this one of the best defensive bullets available This is probably the best personal defense load in existence featuring 16.25" of penetration and .86" of expansion. Specifications for Doubletap Ammunition Lead Free .270 Winchester 130 grain Solid Copper Rifle Ammunition: Manufacturer: Doubletap Ammunition Caliber: .270 Winchester Number of Rounds: 20 Bullet Type: Solid Copper Bullet Weight: 130 grain Package Contents: Doubletap Ammunition Lead Free .270 Winchester 130 grain Solid Copper Rifle Ammunition