I was on the Lake George pass with my Dewson 10 ga loaded with 4 1/2 dr Fg and 2 oz Lubaloy 4's. I shot once into a flock of Redheads about 35 yds high and three drakes dropped out. Some guy heard the strange FOOM and saw the big smoke column and I heard him quite loudly and with kind of a western twang say "What the hell was that!?"