Best shot was when I was duck hunting when I was maybe 15. I had already downed a few mallards when some teal came in.
Anyon who has hunted teal know how those suckers move and you can screw yourself into the ground trying to keep up with them. I kept following this one hoping it would come into range. It finally did, but then swept low out my line of sight behind some reeds. Suddenly that sucker popped up right by the blind and I just aimed up, and shot. Killed it and it fell in the blind. Luckiest shot ever.