"...And if you can find me a guy who puts three rounds in a 1/2 moving target at 100+ meters under six seconds with a bolt-action rifle and scope, I will be very impressed......that simple fact is the biggest hole in the lone-gunman theory.'
Well, you only got the distance, time and the number of hits wrong...all in one sentence. Other then that you seem to have all the "simple facts" down fine.
I don't think it's accidental that most conspiracy proponents don't even know the most basic facts, including the distance of the shots, the timing of the shots, angle\trajectory of shots, entry and exit wounds, etc. Most of their information seems to come second or thirdhand and they probably couldn't even tell you the original source.
If I wanted to prove a conspiracy, I'd forget about proving there was more then one shooter and focus on who Oswald was "working for". Plenty of room for speculation there and the facts won't get in the way as easily.
yowser