Can anybody provide proof of a successful reenactment of Oswald's feat?

[Sean Kneringer]

In reality, Oswald had closer to nine seconds to complete the shooting and was helped by the fact that the limo noticeably slowed down before the head shot. Under those conditions, lots of marksmen could simulate the shooting.

[Matt Grantham]

 If there is only one foot of space between the bottom opening of the window and the floor i am pretty sure he would have to had been laying flat on his stomach to shoot

[John Iacoletti]

In reality, Oswald had closer to nine seconds to complete the shooting

You couldn't possibly know that since you don't actually know exactly when the shots were fired.

[Jack Trojan]

Has anyone tried it with a wonky scope?

[James Dahl]

Also there's only one confirmed hit from Oswald, the headshot is not confirmed to be from him, so he only had to hit once on three shots.  His second and third shots missed.

[Walt Cakebread]

In reality, Oswald had closer to nine seconds to complete the shooting and was helped by the fact that the limo noticeably slowed down before the head shot. Under those conditions, lots of marksmen could simulate the shooting.

It's not merely the rapidity of the shots  that make the feat impossible.....There was a tree between the window and the car...  A gunman couldn't have declined the muzzle of the rifle from back in the room ( he would have hit the window sill) and he could not have got up close to the window because the boxes were in the way......

The whole scenario is simply Bull Stuff......

[Tim Nickerson]

Also there's only one confirmed hit from Oswald, the headshot is not confirmed to be from him, so he only had to hit once on three shots.  His second and third shots missed.

The headshot is confirmed to have been fired from Oswald's rifle. Two large bullet fragments found in the limo were matched to his rifle.

[Jack Trojan]

The headshot is confirmed to have been fired from Oswald's rifle. Two large bullet fragments found in the limo were matched to his rifle.

BS! Citation pls.