Sierra GameChanger 243 Win 90 Grain Features Sierra's GameChanger ammunition is the result of more than 70 years of designing world-class bullets. Each GameChanger round utilizes a Sierra Tipped GameKing bullet with an extremely accurate boat tail profile and a polymer tip seated in a hollow point design for fast expansion upon impact. A lead core encased in a thick tough copper jacket delivers outstanding penetration and controlled expansion at any range. There are those who will argue that a .243 Winchester is just a little small for deer hunting. Apparently they have never tried Sierra's GameChanger ammunition. Sierra's .243 load utilizes their tough as nails 90 grain Tipped GameKing bullet with a G1 BC of .390 which exits the muzzle at 3200 FPS. The .243 GameChanger ammunition will hit hard and penetrate deep. For whitetail sized game this stuff truly is a real GameChanger. Sierra GameChanger 243 Win 90 Grain Specifications: Brand: Sierra Category: Centerfire Rifle Rounds Caliber: 243 Win Model: GameChanger Bullet Weight: 90 gr Rounds Per Box: 20 Casing Material: Brass Bullet Type: Tipped GameKing