You don’t think Oswald pulled the trigger? A 3 week Marine recruit could have made that shot...including any Army dog.
Which shot?
As a long time student of the JFK assassination, I don’t accept that Oswald was a shooter. Anecdotal reports of those who tried, SEAL snipers included, demonstrate that no one could work the Cacarno action fast enough to get off aimed shots. Then you have the information that was recently released showing shot placement.