Yeah, that’s what I have heard-go for the nose if it’s head on as is likely if it’s charging you. I have also heard that jammed into its mouth is appropriate when it’s right on top of you trying to turn you into lunch and breaking its front shoulder(s) first and foremost is most preferable. Doubt I’ll ever have to worry about it; although, I have been considering a black bear hunt for a while.
Judging from these pictures, that makes sense. It also looks like there is a layer of bone between the eyeball and the brain.
Grizzly Bear Skull
Black Bear Skull
Brown Bear Skull