Go to Circle Fly <http://www.circlefly.com/> for the proper wads. Over powder wad, cushion wad and over shot wad. Shoot a square load with shot and powder equal in volume. I like to back off 10-15% on the powder charge. Seems to give a better pattern. Glue over shot card in with water glass-Elmers-Gorilla Glue, Hot Glue gun, Duco Cement or any other glue of your choice.
I don't think the Brass cases give a superior finished product but the style points are always welcome.