A FORENSIC EXPERT ANALYZED AUDIO OF RFK SHOOTING | SOUNDS IF AT LEAST 10 SHOTS BEING FIRED

Possibly within those shot sounds there were two instances of double shots (two shots so close together that they couldn't have come from a single gun), and that the security guard who RFK Jr alleges was the real shooter was holding a gun with similar rifling characteristics to the audio in the tape.
The gun that allegedly killed FK was a .22 caliber
Iver-Johnson Cadet revolver.
You can see from the photos that this weapon only carries eight rounds.
This means that only eight bullets could have been fired if Sirhan was the only shooter. But that was simply not the case.
So who was the second shooter?
https://www.washingtonpost.com/news/true-crime/