I see that is a loaded question.
How about I ask you if you think LHO on Nov. 22, 1963, killed JFK using a Mannlicher?Carcano and so on....?
How is that a loaded question? It is your claim that it is impossible to replicate the shots.
On Nov 22,1963, Lee Harvey Oswald assassinated President Kennedy using an Italian Carcano rifle that he had purchased though mail order. He fired three shots in about 8.7 seconds. The first shot missed at about frame 153 of the Zapruder film. The second shot struck both Kennedy and Connally at about Z223. The third shot struck kennedy in the head at z313. There were no other shots fired in Dealey Plaza that day.