[Steve_Seattle]

"I think he had head down in a charge position."

I think it more likely that the effect of the initial shots finally caused him to fall forward, and that the final shot - the fatal head shot - hit him as he was falling towards the officer, hence its entry point at the top of the head.

[dalebert]

Yes. Just discussed this with my brother and he agrees. He does is a gun smith and does velocity and impact studies. He agrees with you.