Featuring Barnes' patented X-Bullet technology, all-copper XPB bullets offer dramatically increased penetration over conventional jacketed lead-core bullets. These lead-free bullets provide superior expansion and weight retention. Energy transfer is unsurpassed, making them ideal for hunting or self-defense. Barnes' XPB bullets are exceptionally accurate and leave no residue to harm shooters in practice environments. Specifications and Features:Caliber 500 S&WType XPBWeight 325 GRDiameter .500S.D. 0.186B.C. 0.228Length 1.055Box QTY 20Catalog #30665