You asked for it so Sierra has provided it. Our new 140gr Tipped GameKing is designed for hunting from today's newer cartridges using a 1-8 twist. Expansion is enhanced by the tip and penetration is regulated by the thick jacket giving spectacular results on a wide variety of game animals. Game from the size of whitetail to possibly elk and a multiple of bears in-between could be easily taken. This bullet requires a barrel twist rate of 18 or faster. - Diameter (inches): 0.264 - Weight (grains): 140 Gr. - Sectional Density: 0.287 - Ballistic Coefficients and Velocity Ranges: .563 @ 2115 fps and above .531 between 1640 and 2115 fps .466 @ 1640 fps and below