Same when shot in the neck.

Is what happens when you aren't very aware of anatomy and run the risk of actually not hitting the brain.

The 'gun under the chin' method can lead you to shoot out your nose and eyes, but still survive. Now if there's a gusher you'd probably hit the brain enough. But ear to ear is way more likely to actually instantly kill you.

Same with the guy in the FBI training video where a guy gets put in an interrogation room without being frisked. He takes a drink of water, puts the cap back on the bottle, pulls out a .45, bangs his temple, and the nose just gushes blood like a fire hydrant.