As I recall in one of Nash Buckingham's stories he mentioned Fred Kimble having killed some 200 ducks using his 6 gauge muzzle loading "Choke Bored" Single on the wing, not sitting on the water. Takes a Lot of Ducks to do that, but there were a lot of ducks in his day. He wasn't accompanied by a "Loader" with a sparte gun either, did it all by himself.

Although Kimble has been called a Market Hunter, my understanding is that he wasn't one.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra