I've seen more than one patient that was hit in the head with a .22, then recovered. They weren't able to think right again, but they lived. I can think of maybe three in twenty years of nursing. From what I can remember the wound tracks when compared against the x-rays showing the bullets seemed pretty straight.I can't think of any that survived and functioned at any level with any other caliber. It's amazing the damage the brain can route around or heal. As I remember these were disgustingly healthy males in their twenties, doing stupid things, so no loss of anything they were using at the time.
Gaily bedight, A gallant knight In sunshine and in shadow, Had journeyed long, Singing a song, In search of El Dorado