Hey CD1, Yes indeed congratulations!
Getting one under normal conditions is great, but having an outstanding story to go along with the kill sure makes it special.
Sounds like you did everything right when it didn't fire. Any idea at all why you think it refused to ignite on the first shot? Any chance that you were using the Pyrodex Pellets and the first one down the bore might have gotten reversed?
I've heard that "hard to ignite" comment on the Pellets before, but never saw it first-hand.
Continued good hunting and clean 1-shot kills, Hot COre