True story
Fort Bragg NC , 1982 inside a bikers bar, I watch a Biker get shot in the forehead with a 22lr at near point blank range. Bullet travel on the outside of the guys skull,under the skin, never penetrated the skull is the brain. He proceeded to beat the guy who shot him to a pulp, walked up to the bar told the bartender to call an ambulance well because he had been shot and ordered a beer !
That’s why I don’t carry a 22lr for SD, but a 22 lr is better than nothing
I can tell you first hand the exact opposite.. Been in the ER and OR for 33 years... .22 LR usually penetrate the cranium.. Immediately fragment, then proceed to lose energy and scramble the brain as they spin around because they can't exit...All because no one thinks they are deadly... We have pronounced more patients dead or brain dead than any other caliber combined...