Back of the head at a downward angle seems to be most efficient. Don't try the lung shots with a duty pistol, I've seen guys unload full magazines trying to get one to stop moving.
Some of those things are very resiliant.
-Ambition is only appreciated after success.
-3/325:Now, where's my dedicated bodyguard? Oh, yeah, he's staring back at me in the mirror.
-"Every fear hides a wish"