The SBT is only needed if JBC is reacting to his chest wound at z230 or so. The evidence is consistent and overwhelming that the last two shots were in rapid succession, which means that there was only one shot before z250. There is no reason Oswald could not have fired all 3 shots.
Nonsense. The M-C took 2.3 seconds to recycle. Then add in time to reacquire the target. There is nothing "rapid" about that.
Shots fired rapidly indicates more than one shooter. Why do you support a false claim?