You have to remember that at the moment of the headshot, the limo was accelerating at full throttle, so there was probably at least a 35mph headwind to blow the blood/brains to the rear.
The speed of the limo didn’t change according to the Zapruder film. The limo was going at exactly eleven miles an hour close to 180 degrees from the Depository.
Prairie dog shooter call it “red mist”.
“You have to remember that at the moment of the headshot, the limo was accelerating at full throttle, so there was probably at least a 35mph headwind to blow the blood/brains to the rear.”
Where did you get that 35MPH figure? The Z’film shows 11MPH. Any movement by material was due to the really fast bullet hitting it.