MAAAAAANNNNN,
That was a lucky shot but one that you will be proud of til you croak. I made a similar lucky shot on a flight of ducks about to pass overhead when a plinking buddy said "Betcha can't hit one". So I drew my '61 Navy and pulled ahead of the lead duck about 15 feet, fired and watched the 4th one back fold up and crash about 100 yds away. As the bird descended I reholstered and acted like I do that all the time. I never told him I was aiming at the first duck and hit the 4th. Good thing they were flying in a "V" formation as they were in line with the trajectory. It was quite memorable. Whenerver you have witnesses you must give the impression that you meant to do that.