Attorney Daryl Parks said that the two head shots, one of which was considered not survivable, both entered from the top of Browns head and exited out the front, one through his forehead and one through his eye.
It shows a back-to-front for both of those, and it supports what the witnesses said about him trying to surrender to the officer,
There are multiple ways that Brown could have been charging the officer and still wind up with wounds to the crown of his head, even if you assume a direct trajectory.
This doesn't even get us to bullets that ricochet inside a skull.
Bullets don't often make right-angle turns.