Just great. Another "based on a true story" made by Oliver Stone.

[former9thward]

30. Bullshit back at you.

Of course I will supply links -- something you won't do.

For 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 (Warren Commission Hearings, vol.3, p.446 and pp.403–10).

In the 1950s Marines had the following shooting qualififcations:

Expert: a score of 220 to 250.
Sharpshooter: 210 to 219.
Marksman: 190 to 209.

In May 1959, Oswald scored 191: one mark above the minimum for a ‘marksman'

Colonel Allison Folsom interpreted the results for the Warren Commission:

The Marine Corps consider that any reasonable application of the instructions given to Marines should permit them to become qualified at least as a marksman. To become qualified as a sharpshooter, the Marine Corps is of the opinion that most Marines with a reasonable amount of adaptability to weapons firing can become so qualified. Consequently, a low marksman qualification indicates a rather poor “shot” and a sharpshooter qualification indicates a fairly good “shot”.(Warren Commission Hearings, vol.19, pp.17f

The Mannlicher Carcano rifle that was discovered on the sixth floor of the Texas School Book Depository, was a “cheap old weapon” (Warren Commission Hearings, vol.4, p.29).

It was examined by the FBI’s firearms specialist, who stated that:

Every time we changed the adjusting screws to move the crosshairs in the telescopic sight in one direction it also affected the movement of the impact or the point of impact in the other direction. … We fired several shots and found that the shots were not all landing in the same place, but were gradually moving away from the point of impact.(Warren Commission Hearings, vol.3, p.405)

Ronald Simmons of the US Army also examined the rifle, and found problems with the bolt and the trigger mechanism:
There were several comments made — particularly with respect to the amount of effort required to open the bolt. … There was also comment made about the trigger pull … in the first stage the trigger is relatively free, and it suddenly required a greater pull to actually fire the weapon. … The pressure to open the bolt was so great that that we tended to move the rifle off the target.(ibid., pp.449–51