Deer Season XP Copper Impact ammunition combines Winchester's extensive experience into a product engineered specifically for deer hunters. The Copper Extreme Point bullet is a solid copper expanding projectile with an oversized impact diameter. A bigger impact diameter means more trauma" better energy transfer and faster knockdown.Specifications:Caliber: .300 WinchesterBullet Weight: 150 GrainsBullet Style: Polymer TipCase Type: BrassMuzzle Velocity: 3260 FPSMuzzle Energy: 3539 FT LBSReloadable: YesLead Free: YesPrimer: BoxerCorrosive: No20 Rounds Per Box200 Rounds Per Case10 Boxes Per Case