Well, define 'brain removal'. If you're talking about actually reducing at least 60% of their grey mass to mush, then yes,[[Understatement that'd give them pause.]]
However, there're many definitions of a 'headshot'. Let's go with 'a shot that, at some point, contacts the head'. Now, if it just scraped them, so to say, along the outer cranium, they'd be good to go, after they regain their balance. And, logically, a round in the middle of the forehead puts them down for the count.
You won't be seeing a lot of headshots in this story, though.
edited 15th Dec '09 1:42:30 AM by Mister Always