Box unit of five 3-inch, 20-gauge rifled slugs. The Magnum series features Brenneke's signature Silver Slug that is designed with right-oriented ribs for easy choke passage, a large frontal impact area, and a patented rear design that slams into the point after impact. These design features ensure high accuracy and deep penetration to ensure clean game kills. Rifled slugs are designed to be used with smoothbore barrels for optimum performance.