Don't know the .22 round details but used to know a guy who'd tried to commit suicide twice in front of the same woman...aimed it under his chin straight up. He survived both times...he'd been bald and had two craters in the top of his skull where the .22 bullets exited....and he didn't think very clearly anymore..
"Get off my lawn."
Glock 42...somewhere you can't see....
Glock 30S close at hand....