Not with a bow but it's a perfectly acceptable shot with a rifle given the right circumstances. And for those that ask why? So you can control exactly where the animal is going to drop. Mountainous terrain with heavy brush and big hungry critters make you want to keep tracking jobs to a minimum. Then there's the lack of meat damage too.

That being said, I'll personally never do it for two reasons: I don't hunt with a rifle (except for one case this year) and I trophy hunt and headshots aren't the best for trophy preservation.