Hornady Cowboy Reloading dies have been specially designed for cowboy action and cast bullet reloaders. These dies feature the same great benefits that Hornady dies are known for. This bullet expanding die is specially designed for reloaders choosing to reload lead bullets. This special die helps to ensure that ammunition is loaded without deforming lead bullets. This die come packaged in a plastic storage box with a Sure-Loc Rings, Shellholder sold separately.