Looked like a graze to me.
I will hang my hat on your credibility if you can offer court worthy proof that a .22 lr or a .32 cannot penetrate a skull.
In ten years of neurosurgery I saw a LOT of GSW. I remember a 16 y.o. Kid who was shot at about 6 feet with a .45 ACP from. 1911. He sai he was facing the shooter “looking down the barrel”. The round hit a bit high in the forehead, thru scalp, exited the back of the head at the Inion. Did NOT penetrate cranium. He got up and walked away. You couldn’t do it again on purpose.