A Mil adjustment to most scopes is a 1/4 inch at 100 yards.
(One of mine is 1/8th inch at 100 yards
)
The shot was done at less. Right around 88+ yards?
On a slow moveing target where the line of travel is known.
By a somewhat better then average shooter.
Oswald could have pulled it off.
Only thing I dispute is the shot from the front as the kill shot.
I see the shot from the back as the kill shot.
Do I believe Oswald was the only shooter?
I'm not convinced no.
I believe there may have been another shooter but not in front of JFK.
Above Oswald would be the position I would take knowiing he was to be the patsy.
Another thing about Snipers? If one tells you they never missed?
They are liars of the first degree or ain't been in the field.