That's unfortunate dude, don't feel down about it. Two positives you can take away from it are 1) you didnt wound him, it was a clean miss, and 2) you know what went wrong on the shot, everything is correctable. You'll get another chance at a big one, it isnt even the rut yet. I whiffed the other night on a yardage misjudgment, it happens. my first miss in a long time.
That's a tough break. At least you know the cause, and I am sure you will get another crack at a shooter. Good luck.