Federal Black Cloud ammunition takes non-toxic steel loads to the next level of performance. Each load features FlightControl wads for tighter patterns and long range effectiveness, and FliteStopper steel pellets that are engineered to have a traumatic effect of waterfowl. Federal recommends using a non-ported choke tube. This will allow the uniquely shaped Black Cloud pellets and FlightControl wad to pass through the bore more smoothly, allowing for an even tighter downrange pattern.