The most telling evidence to me has always been the simplest. Take the rifle Oswald used, and try to reproduce the shots in the time frame, on target, employing the skills of a trained sharpshooter. I remember (at least I think I do) black and white film of a guy trying to fire a shot, cycle the bolt action, aim and fire again (lather rinse repeat) and he could not do it in the same time frame/ accuracy as Oswald who was not a trained shooter.
tin foil ...
For every one of these pieces of evidence "proving" Oswald couldn't have done it alone, I've seen ten showing he could.
The JFK assassination conspiracy thing is like an article of religious faith--forget the proof, some people "just know" it was a conspiracy.
I vaguely remember reading something a few decades ago that said that the total weight of all the fragments plus the “pristene bullet” added up to quite a bit more than the total weight of two unfired bullets.
Don’t mean nothin’ though. We’re never going to find out exactly what happened. The ruling class will see to that.
I saw Oswald's brother ov tv once and he got off 4 or 5 shots in the alloted time with a similar rifle. He believes that his brother was the only assassin.
Oswald was a Marine-corps trained shooter, and was quite competent.