i don't know of a legal situation where it would be an advantage to have 20 rounds of buckshot available. i meant if your thinking self defense, you probably would have destroyed everything of value that your were trying to protect. that said if i wanted to shoot 20 rounds that fast, the extra weight on the front would help to keep you on target.
I was just saying if someone really wanted to do some damage in a crowd, that would be lethal. I will try to fetch a youtube of the destruction buckshot can do.