I'll just add that depending on the situation there may be no time to aim for a CNS shot when a bear emerges going full blast from thick cover 15yrds away. More like point, look over the scope and pull the trigger! At least thats how it was during a wounded black bear charge I experienced with a friend about 6yrs ago. And both of us missed any CNS areas, luckily the big bear turned after the second close-up shot but still had plenty pep to do the tasmanian devil gig in the nearby brush. If we would have been facing a tougher, meaner grizzly we would have been toast!
And yes, the bear's head was down as Art describes, a big, fast approaching chocolate blurr!
MtnHtr
