Finally, a serious, heavyweight load for the .357 Magnum for the woods and hunting! These hardcast LBT-style bullets create wide DEEP wound channels for hunters and those concerned with woods protection. Velocity is from a 4" bbl. From a 6"bbl average velocity is: 1425fps! Caliber: 357 Magnum Bullet: 180gr. Wide Flat Nose Gas Check Hardcast Velocity: 1300fps / 4" Ruger GP-100 muzzle 1420fps / 6"bbl S&W 686 Muzzle Energy: 676 ft. lbs. 557ft lbs at 50yds from a 4" bbl.