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 - Boat tail design for stable flight and accuracy - Introducing the Sierra GameChanger hunting bullet: the perfect combination of Sierra’s 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 transparent 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 at a variety of ranges. It’s a GameChanger on any hunt! This is not loaded ammunition. - Dia. (inches): 0.243 - Weight (grains): 90 - Sectional Density: .218 - Ballistic Coefficients and Velocity Ranges: .490 @ 2700 fps and above .400 between 1380 and 2700fps .320 @ 1380 fps and below