Anyone that hunts at all will eventually make a bad shot, we just try to do our best to follow through and finish what we started.
Mine (I have had a couple) was on an antelope but a few years back when I was 14. It was the last week of the season and I hadn't hunted at all since I had saved up my nickels and dimes to buy my 700 7mag, then had to wait for Leupold to ship me the scope, and by the time I had it all together, season was almost over. So off I trot with my folks and brothers because antelope hunting
is a team sport. We found a herd of bucks that were pretty spooky from being chased around all weekend, and got to about 425 on them, with no way to get closer. Dad told me to pick one since they had all lost their horns, so I did, and at the first shot, he sat straight down like a dog and the others ran off. So I shot again, saw the bullet kick up dust so it thought I was shooting high, so held lower, shot again and started to reload when he tipped over. Upon getting up to him, there were two shots behind the shoulder about a hands width apart, and both of his back legs where blown off at the hocks. Dad and brothers then said they had seen my first shot hit him there but hadn't said anything because they didn't want to rattle me. Next two shots where right where they needed to be, just as in practice. Plain and simple, I made a REALLY bad shot, had to have been from a massive flinch, because the follow ups were right on. I was lucky to have broken him down on the first shot instead of just taking out a single leg, or things would have gotten ugly. To this day I would have preferred a clean miss or to have probably not shot at all, but that buck and that rifle were my start into long range shooting and I learned a lot in that little encounter.