Featuresa New and improved loadsa Faster-burning, cleaner propellant leaves drastically less residue in the barrel and actiona Catalyst high-performance primer provides the most complete, consistent ignition possiblea Optimized velocitiesNo matter what the weather, Speed-Shok Waterfowl shotshell ammunition will perform reliably and consistently with every shot. Its Catalyst primer and faster burning powders dramatically reduce residue, while its optimized velocities knock birds out of the sky. Loaded with a high density plastic wad with a gas-sealing flange, this feature adds efficiency to the load for an even better performance!