Only a dude in the Army would think a sub 100 yard shot with a scoped rifle from a rested position on a known route would be a "hard shot". It's not that "hard" to replicate the shot. Most people just don't actually bother trying. Jesse Ventura and his stupid ass pulled it off on his second attempt without ever touching the weapon before. Oswald would likely have been more proficient with his own weapon than someone who's never touched it before. Even the Marines shitty pizza box marksmen qualify with irons 400 yards beyond that shot. Anyone who thinks someone other than LHO was the shooter is just ignoring basic ballistics and common sense.
Navy SEALs are blasting dudes off the back of ships in the ocean and at 1000+ yards in combat. But you think a dude can't let off a bunch of shots from under 100 yards and miss a few hit a few?
That said, I would buy into the idea that he was part of a larger conspiracy and Ruby silenced him. It wouldn't be too surprising if he was the hired gun, but when he was arrested for shooting a police officer after the assassination that changed their plans. Maybe they planned on killing him later or something. That makes more sense than gunmen hiding in bushes or secret service accidents.
it was well known to the FBI that the Kennedy's were hated by the Mob and transcripts and evidence was long ago released that had some of Hoover's notes from the "black bag" operations he did. Hoover's black bag illegal phone tapping was quite normal back then. Sam Giancana, Santo Trafficante and Carlos Marcello's all wanted Kennedy gone and said as much in phone calls that were wiretapped. the black bag operations were illegal and inadmissible and hoover hated organized crime investigations AND hated the kennedy brothers, so he destroyed them all before the Warren commission. Fucking Trafficante's own Lawyer Frank Ragano after all those bosses were dead and he was dying of cancer told folks he could say now since his lawyer client privilege is over since they are all dead and that Hoffa used him as a go between to request Kennedy's elimination from trafficante and Marcello.
Oswald's uncle was a bookie under the umbrella of mob boss Carlos Marcello.
Jack Ruby was a KNOWN mafia gofer working for Carlos Marcello and Joseph Campisi the Dallas mob leader. Its on record that he made calls to the following folks the 2 weeks before Kennedy was shot. Irwin Weiner, a Chicago Bail Bondsman who was a house rep for the Chicago Mob Boss Sam Giancana, he then called Nofio Pecora, a Capo in the mafia under Carlos Marcello, and Robert Baker, a known henchman to Teamster boss Jimmy Hoffa who got out of prison a few months prior.
Those calls were investigated and the explanations were horseshit LOL
"Yes, this Dallas nightclub owner called me, a Chicago bail bondsman for help with his union problems! I don't know him. Why was it a half hour call? I can't remember. He was funny so we talked a bit. im not that busy"
or
"Yeah im a high ranking Capo consigliere in the new orleans crime family , but i was taking calls for my New orleans nightclub friend because he wanted to borrow a hot stripper from the new Orleans bar to have her dance in Dallas! I don't know the guy. it wasn't me who called him back collect for 21 minutes on my phone line, it was my friend talking about da strippa"
or
"I just got out of jail in DETROIT, but this guy I don't know from Dallas called for me. I wasn't home and my wife took the call. So i called this guy back collect and talked with him for 45 minutes about how to fuck up the union giving his bar trouble"
I mean, it could all be cosmic coincidence. But he happened to be on the horn with intermediaries to the 3 big shots who wanted Kennedy dead most. And then this Mafia gofer just decided to be a good Samaritan and kill Oswald in flash decision upon coming across him surrounded by an army of cops.....lol
Oh and he ate at Joseph Campisi(Dallas Mob Boss) restaurant the night before Kennedy was killed. and Joseph Campisi visited him in prison 3 times after he shot Oswald and then claimed to not know him during the investigations. LOL