Winchester Deer Season XP Copper Impact Springfield 180 Grain Copper Solid Centerfire Rifle Ammo 20 Rounds. The Copper Extreme Point bullet is a solid copper expanding projectile with an oversized impact diameter. A bigger impact diameter means more impact trauma better energy transfer and larger wound cavities for faster knockdown. Specifications for Winchester Deer Season XP Copper Impact .30-06 Springfield 180 Grain Copper Solid Centerfire Rifle Ammunition: Manufacturer: Winchester Caliber: .30-06 Springfield Number of Rounds: 20 Bullet Type: Polymer Tipped Boat Tail (PTBT) Bullet Weight: 180 grain Cartridge Case Material: Brass Muzzle Velocity: 2945 ft/s 3200 ft/s Application: Deer Personal Defense Package Type: Box Primer Style: Centerfire Lead Free: Yes Bullet Core Material: Copper Package Contents: Winchester Deer Season XP Copper Impact .30-06 Springfield 180 Grain Copper Solid Centerfire Rifle Ammunition What is Winchester Deer Season XP Copper Impact .30-06 Springfield 180 Grain Copper Solid Centerfire Rifle Ammunition good for? The manufacturer thinks that it is suitable for personal defense deer.Winchester X3006CLF2: Deer Season XP Copper Impact .30-06 Springfield 180 Grain Copper Solid Centerfire Rifle Ammo 20 Rounds