Bring on the Hunt The Rossi Rifled Slug Gun Many of our top whitetail states require slug guns exclusively for hunting deer, while others offer an extended season specifically for slug gun hunters. In either case, you can join the hunt in quality and style with the latest addition to the Rossi single shot long gun line the fully rifled 12-gauge and 20-gauge slug guns. These large bore guns are button rifled for extreme accuracy and equipped with ballistically engineered factory porting to help control the felt recoil of heavy slug loads without affecting muzzle velocity.