I'm definitely on board with not shooting at running goats. If you do the math (like Kraigwy's example), it shows that you have to make several
very precise judgments in a split second. I'm sorry, but my brain can't calculate an exact range and speed that quickly. What my brain does calculate that quickly is, "I'll pass, and wait for one that's sleeping." (The meat will be better, anyway.)
I do make an exception, though: wounded animals. If you or some one you're hunting with manages to screw up a shot and wound an animal, you'd better stop them as soon as possible. In that case, I will shoot a running goat. (Not "shoot
at", but
shoot. If you're just lobbing bullets at them randomly, you shouldn't be there, anyway.)
The easiest solution to avoiding the "bouncing" herds on opening day is to not hunt opening day.