@mark noble,
So, let this topic be, buried forever?
Jackie kennedy ensured Jacks finale - By placing a 'Derringer/Deringer' - type (One shot, minipistol) under his left temporal - As she drew his torso out of 'shot' - Toward her.
(New footage (From opposite view, Toward 'Bushes') 'FBI-releassed, 2018'.)
Proves this.
Shrieks, dumps pistol behind seat, whilst feigning exit to rear of vehicle...
Truth is... Doesn't matter - It's just nice to shut the door on a rabbithole, Now & Then.
Have a Lovely Day