I treated a guy who's wife shot him in the back of the head with a .25ACP that skimmed over his skull & under the subcutaneous fat. A med student used local anesthetic & a scalpel to remove it.
The other 5 slugs were in the lower neck/trapezius & back but didn't go more than a couple inches & were stuck in muscle. Since the shot man was a body builder, no damage was done by the bullets--none penetrated deep enough. Seems he had an extramarital fling & his wife couldn't wait for a divorce.
He was discharged from the ER, but we recommended he stay with a friend instead of going home.
I do remember when she showed up screaming at him with her family, she was arrested with some chromed .25 on her--empty. They installed metal detectors soon after.
OTOH, I missed the drive-by shooting on the ER by 24hours--I was off that night.
I've seen a 12 gauge slug deflect off of the bill of a baseball cap...at ~15 yards.
"You go into Afghanistan, you got guys who slap women around for five years because they didn't wear a veil
... you know, guys like that ain't got no manhood left anyway. So it's a hell of a lot of fun to shoot them."
Lt. Gen. James Mattis, USMC, former 1st Marine Division CO