If fired within 2 feet , there should also be 'powder burns' accompanying the entrance wound.
Autopsy might also show bruises on knuckles from the assault on the cop while he was in his car , or,
'St. Michael' had "hip-checked" the door , thus causeing a head injury to to police officer.
Also , understand that the police officer had just been assaulted in his car , alledgedly unprovoked , and was attempting an arrest of the 'perp' .
Baden noted that browns clothing, not provided to him, could contain powder traces.