The Robert Kennedy assassination has always been the neglected assassination. There have been only a handful of books. The House Select Committee did not investigate it. Rose Lynn Mangan has and she has posted a lot of information on her site Sirhan's Researcher.
The document is an L.A.P.D. memo from a “W.E.P.” to Deputy Chief John A. McAllister, asserting that the L.A.P.D. had run its own independent analysis of the two bullets using its own Hycon Balliscan camera. Criminalist Larry Baggett’s conclusions were cited in the memo.
He concludes that:
1. The bullets that hit RFK and William Weisel were NOT fired from the same gun.
2. The bullet that entered RFK’s neck was not fired from Sirhan’s revolver.