[Right_Wing_Madman]

The totality of the evidence points to Oswald acting alone. I have seen nothing to refute that.

The US House Select Committee on Assassinations from 1979 disagrees with you. In their final report, they concluded:

"Scientific Acoustical Evidence Establishes a High Probability That Two Gunmen Fired at President John F. Kennedy"

"President John F. Kennedy was probably assassinated as a result of a conspiracy. The Committee is unable to identify the other gunman or the extent of the conspiracy."

https://www.archives.gov/research/jfk/select-committee-report

I won't get in all the details here, but eyewitness testimony, forensics, photographic and acoustic evidence overwhelmingly point to a second shooter in the front of Kennedy's limousine, and therefore, a conspiracy.

And yes, both assassins were good shots.

[mfish13]

The acoustical evidence was seen to be questionable. All bullets and fragments were from the same lot number as the bullets found at the snipers nest. Tested twice. From the front? Through the windshield? Impossible. Try again.