Designed for fully rifled barrels, Hornady American Whitetail Slugs are loaded with 325-grain Hornady InterLock bullets; A hollow point serrated design initiates rapid expansion upon impact, and a tough, lead alloy core is lethal out to 200+ yards; The rigid polycarbonate sabot ensures accuracy. The end result is an accurate delivery system for a tough shotgun slug capable of taking the biggest midwestern whitetails; InterLock ring that locks the core and jacket together to deliver controlled expansion combined with excellent weight retention, energy and accuracy