I just came across this. In the late 1800s/early 1900s, commercial waterfowl hunters had to make production. None of that 2 barrel shotgun stuff. The answer, a 2 gauge 'punt' gun to clear out a large portion of a flock of birds. I believe I've heard these mentioned on this board but if I ever saw one, I'd forgotten about it.
[ame]https://www.youtube.com/watch?v=EzwbcVbE9rw[/ame]
[ame]https://www.youtube.com/watch?v=EzwbcVbE9rw[/ame]