Oswald wasn't an expert shooter and
expert riflemen from the US Army have
failed to duplicate the speed and accuracy of the supposed shots during simulated experiments:
http://22november1963.org.uk/lee-harvey-oswald-marksman-sharpshooter READ ITSimulating the JFK AssassinationFor the benefit of the Warren Commission, expert riflemen from the US Army and the FBI attempted to duplicate the assassin’s task, using the rifle that had been discovered on the sixth floor of the Texas School Book Depository.
Even after fixing some of the gun’s mechanical problems, and despite firing at stationary targets from an easier vantage point, they failed to achieve the combination of accuracy and speed demanded of the lone gunman: two hits out of three, within about six seconds (see Warren Commission Hearings, vol.3, p.446 and pp.403–10).
Oswald’s Marine Rifle Marksmanship ScoresIn the late 1950s, US Marines were categorised at three levels of shooting ability, according to the scores they achieved at a standardised test of their accuracy:
Expert: a score of 220 to 250.
Sharpshooter: 210 to 219.
Marksman: 190 to 209.
According to his Marine score card (Commission Exhibit 239), Oswald was tested twice:
In December 1956, after “a very intensive 3 weeks’ training period” (Warren Commission Hearings, vol.11, p.302), Oswald scored 212: two marks above the minimum for a ‘sharpshooter’.
In May 1959, he scored 191: one mark above the minimum for a ‘marksman’.