Been discussed on here several times, always gets messy, and without skybuster, not sure I want to get involved, but I can't help it. Yes, I've taken head shots several times. All under 75 yards. All perfect situations. If you KNOW your rifle, and know how it shoots, than there is no problem. There is always a risk of only wounding an animal with any shot you take. In the summer I shoot SOMETHING everyday, not a lie its an addiction and I can't help it. Now that I'm away at school i only have time for and can afford to shoot about two or three times a month. But if you practice all the time and know your gun. than yes, you can pick which hair you want to shoot.
-Jake