MFR# 8445UPC: 0092763084458Sports Master handgun bullets are engineered to provide consistent, reliable expansion over a wide range of velocities. Sierra has added a serrated "Power Jacket" on hollow cavity and hollow point bullets. On impact, the "Power Jacket" expands uniformly along the serration lines for consistent weight retention and maximum energy transfer.FeaturesDiameter: .400Grains: 165Sectional Density: .147MFR# 8445UPC: 0092763084458