Reloading slugs is cheaper than loading shot loads. The wads are usually found 20 to 30 feet from the muzzle. Cast iron pot over a propane burner. Ladle and mould. Cast like any other bullet. You have to insert and remove a plug every time to form the hollow base. Lyman has a cast bullet manual that explains it well. Factory sabots are pricey,reloaded sabot slugs are econmcal to shoot 50 in a setting. Should be something on U tube about Lyman sabot slugs.