There has been a lot written about the Carcano and Oswald's ability, or the lack, in marksmanship. If he was the lone gunman I wonder what it would have been like ? He only had 3 or 4 rounds. No spare rounds were found at his home, or at the scene. It seems odd to me that a man would not have more ammo in such a scenario. So he went to work that day, having read in the paper the day before that the parade route has been changed bringing the president's limo around the school book depository.
Now he is at the window , we presume, with the junk rifle and the ill fitting scope. So he had one locked and loaded and they say the first shot hit behind the limousine. So he got off 3 shots in 6 seconds. He is shooting at the president of the united states. Was he nervous ? He was never an expert riflemen in the Marine Corps. He had to pull the trigger, operate the bolt ...... and mark his target again .... through the cheap shoddy ill fitting scope. Could he have done it ?
Here is one of many conflicting websites reviewing LHO's marksmanship and tests done with the rifle he is alleged to have used by Gov agencies.