Remington 308 Win 172 Grain Impact Centerfire Rifle Ammo 20 Rounds. This Remington Ammunition features Polymer Tipped Boat Tail (PTBT) bullets that deliver strong stopping power perfect precision and reliability. With premium brass cases loaded with polymer tipped boat tail (ptbt) bullets you ll deliver best results for target. With great promotions on Ammunition and other high-quality rifle ammo from trusted brands like Remington you re sure to find the perfect firepower for your field or range use. Stock up today to save big on ammunition and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Remington 308 Win 172 Grain Impact Centerfire Rifle Ammunition: Manufacturer: Remington Caliber: .308 Winchester Number of Rounds: 20 Bullet Type: Polymer Tipped Boat Tail (PTBT) Bullet Weight: 172 grain Cartridge Case Material: Brass Muzzle Velocity: 2635 ft/s Muzzle Energy: 2651 ft-lbs Application: Target Primer Style: Centerfire G1 Ballistic Coefficient: 0.522 G7 Ballistic Coefficient: 0.265 Lead Free: No Package Contents: Remington 308 Win 172 Grain Impact Centerfire Rifle Ammunition What is Remington 308 Win 172 Grain Impact Centerfire Rifle Ammunition good for? The manufacturer suggests that it is suitable for target.Remington R21345: 308 Win 172 Grain Impact Centerfire Rifle Ammo 20 Rounds