As said I'm not going to use any steel cartridges in my HD 23 F&F as the waterfowl volume I'm going to be shooting nowadays looks negligible, bismuth will do. I am looking for a 20 gauge S&S advertised as steel capable like a Rizzini or some something. A friend wants me to come out to California and work my dogs with his at his hunt club. Fascinating information from Drew Hause. Like my Father often said: "You'll learn something new every day if you're not careful".