From the CT POV: Oswald was a crappy shot with a crappy rifle and ammo. Do I have that right so far?
No, you have it wrong. Oswald was probably a decent shot had he practiced, which all sharpshooters must do to keep sharp. If Oswald knew he was going to take some shots at the POTUS it was imperative that he was well practiced and familiar with a reliable rifle. The fact that Oswald was a military marksman meant he knew what would increase his odds of success. This included:
1) Get a Mauser, not a MC (which was probably only a few bucks more, but much more reliable. The MC tended to jam almost every clip)
2) Practice practice practice...then practice some more.
3) Sight-in your scope (the fact that it wasn't implies that Oswald never practiced with the rifle)
4) Do NOT disassemble/reassemble the rifle or you will have to zero the sights in the TSBD.
5) Remove the misaligned scope from the rifle if you don't intend to use it. It takes up less space in the paper bag and it's just in the way if you intend to use the iron sights.
A preponderance of the evidence implies that Oswald never took a shot with the MC. I still haven't got a satisfactory answer from the LNers how Oswald managed to not get a single print on the rifle's stock, bolt, barrel, scope, trigger, clip, shells and strap after he disassembled/reassembled the rifle and supposedly fired it 3 times. Why doesn't that give you LNers pause?
If so, I'd ask how would any framers would go about convincing anyone that he was believable as killer.
Because you LNers have been carrying the conspirators water for 56 years now. Congrats!