Federal Premium BARNES TSX .300 Winchester Short Magnum 165 Grain Barnes Triple-Shock X Centerfire Rifle Ammo 20 Rounds. This elk hunting ammunition from the folks at Federal Premium features a grooved bullet shank that improves accuracy and a nearly 100 percent weight retention rate delivering deep penetration and large consistent expansion every time. The all-copper construction of Federal Premium TSX means no fouling from shot to shot and you get optimal accuracy with every shot you make. One-piece construction means there's no peeling off of material in the hollow-point tip and you'll never have to reload. For a trusted and proven way to see whitetails and other game in the field choose Federal Premium TSX Ammo. Specifications for Federal Premium Barnes TSX .300 Winchester Short Magnum 165 Grain Barnes Triple-Shock X Centerfire Rifle Ammunition: Manufacturer: Federal Caliber: .300 Winchester Short Magnum Number of Rounds: 20 Bullet Type: Spitzer Boat Tail (SBT) Bullet Weight: 165 grain Cartridge Case Material: Brass Muzzle Velocity: 3130 ft/s Muzzle Energy: 3589 ft-lbs Application: Big Game Package Type: Box Primer Style: Centerfire G1 Ballistic Coefficient: 0.398 Lead Free: No Features of Federal Premium .300 Winchester Short Magnum 165gr. Barnes Triple-Shock X Rifle Ammo - 20 Rounds One-piece copper construction Deep hollow-point tip Grooved bullet shank improves accuracy Almost 100 percent weight retention Deep penetration and large consistent expansion A portion of the proceeds of each sale of this product go directly to the conservation effort of Rocky Mountain Elk Foundation (RMEF) Package Contents: Federal Premium BARNES TSX .300 Winchester Short Magnum 165 grain Barnes Triple-Shock X Centerfire Rifle Ammunition What is Federal Premium Barnes TSX .300 Winchester Short Magnum 165 Grain Barnes Triple-Shock X Centerfire Rifle Ammunition good for? The manufacturer thinks that it is good for big game.Federal P300WSMG: Premium BARNES TSX .300 Winchester Short Magnum 165 Grain Barnes Triple-Shock X Centerfire Rifle Ammo 20 Rounds