Optimal jacket wall thickness controls expansion and retains weight Open pocket under the polymer tip expands lead core instantly on impact Tuned ogive for industry-leading BC Introducing the Sierra GameChanger hunting bullet: the perfect combination of Sierras legendary match accuracy coupled with deadly penetration. Sierra re-engineered their legendary MatchKing bullet into a hollow point design for quick expansion and fitted it with a green tip for ballistic uniformity. Inside, the GameChanger features a unique construction that utlilizes a special lead alloy surrounded by a tough copper jacket that delivers excellent penetration and expansion. Its a GameChanger on any hunt! This is not loaded ammunition.