I think now is a good time to quote from British physiologist Russell Kent's superb refutation of the single-bullet theory (SBT) in his outstanding 2022 book JFK Medical Betrayal: Where the Evidence Lies. Recall that Dr. Vincent DiMaio changed his mind about his earlier acceptance of the SBT after extensive correspondence with Russell Kent.
Dr. Cyril Wecht wrote the foreword for Kent's book. Here's some of what Dr. Wecht had to say about Kent's research:
Russell Kent does not stop in his excellent research with the autopsy debacle. He proceeds to analyze, dissect, and discuss each of the subsequent medical reviews established and implemented in an official fashion by a US governmental agency, beginning with the Federal Bureau of Investigation (FBI) and the bipartisan Warren Commission in the months after the murder. . . .
JFK Medical Betrayal reviews in a candid, no-nonsense, detailed fashion all of those investigations, leaving no stone unturned in critically exposing the various kinds and levels of a cover-up that the US Government has passively accepted over the past five decades. Anyone who has harbored an interest in the assassination of US President John F Kennedy, including readers with no medical, legal, or forensic science education, will find JFK Medical Betrayal an intriguing, informative, intellectually enjoyable book. (p. 8 )
And now let's read some of what Kent says about the SBT:
The Warren Commission concluded that the single bullet, which it labelled CE399, caused a perforating wound when passing through JFK’s neck entering ‘at the base of the back of his neck’ and exiting his throat. There was, however, nothing to prove the wound in his back and the one in his throat were connected.
Humes tried to claim that a small bruise he described in the top right lung of the President was supportive, but it could not show direction of wounding and could equally have been caused by an entrance in the throat. Furthermore, the photograph he claimed to have of this injury is missing. The autopsy doctors did not dissect the path of the bullet. They did not cut away the skin, muscle and organs of the neck to reveal a bullet track. . . .
‘The base of the back of his neck’ description of the entry wound might also fail legal challenge as these words came not from a doctor, but from Warren Commissioner and future President Gerald Ford. The President’s autopsy report more correctly described it as a back wound and not a neck wound. Furthermore, two other documents supported the back location: The autopsy ‘face sheet’ completed by Dr. Boswell marked ‘verified’ by Admiral Burkley and JFK’s US Navy death certificate, also prepared by Burkley. JFK’s clothing also showed holes in the back and the physical evidence was corroborated by the eyewitness statement of Secret Service Agent Bennett and the testimony of Secret Service Agent Hill. How could a bullet fired from several floors up enter JFK’s back and then exit the midline of his throat? It would have to travel upwards from the lower wound to the higher and its trajectory could not continue into Connally’s back. . . .
Even with all this manipulation of evidence, which would never have gone unchallenged in a legitimate court, the Warren Commission could not make it fit. The lawyers had a theory and a magic bullet, but even some of the commissioners had doubts about it. What they needed was some experimental evidence, and it had to be generated in secrecy in case it was incompatible. Who better to ask than the US Army who had a research centre just up the I-95 from Washington DC at the Edgewood Arsenal in Maryland? Surely, they could clean up for the legal team. . . .
The tests involved the penetration characteristics of only Western Cartridge Company 6.5 mm rounds fired from the Mannlicher-Carcano, the appearance of resulting entrance and exit wounds, whether such rounds could produce the wounds seen in Governor Connally, the integrity of fired rounds and whether the JFK head wound could be ‘recreated’. Olivier dutifully performed the tests he was asked to run and in May 1964 testified to the Warren Commission.
For ‘proving’ the possibility of the single-bullet theory, the experiments were almost worthless. Not only were they unscientific but breaking down a continuous event into discrete episodes will not necessarily prove the whole.
The Edgewood Arsenal Report states that a tissue-retardation study was done to determine the velocity lost when a 6.5 mm bullet passes through an amount of tissue equivalent to the distance travelled in the lower neck of the President. The testers concluded that the bullet that wounded JFK in the neck had sufficient remaining velocity to account for all Connally’s wounds. Apart from there being no hint of the word ‘alleged’, this is entirely the wrong experiment.
There should have been a test to answer the following question: could a shot through the neck exit in the midline of the throat without major damage to the spine? The Edgewood doctors had no answer to this as, remarkably, their experiment contained no bone. If the Commission’s proposed shot could not exit the front of the throat without damaging the spine, the single-bullet theory cannot be the truth. And, indeed, this is the case.
Many years later, using a CAT scan of a body whose upper chest and neck dimensions were the same as those of JFK, Dr. David Mantik (a radiation oncologist with a doctorate in physics) found that the trajectory proposed by the Warren Commission would hit the cervical (neck) vertebrae. Remember too, the passage of a bullet through JFK from back to front was never proven, only presumed. . . .
A third Edgewood Arsenal test involved shooting the wrists of 10 human cadavers to see whether Connally’s wrist wounds could be produced using the alleged assassination rifle and ammunition. Briefly stated, the wounds could not be recreated. The damage done to the cadavers’ wrists was always greater than the damage done to Connally.
Olivier decided this was because the bullet was moving more slowly when it hit Connally’s wrist. He speculated that deceleration had occurred when the bullet perforated Connally’s chest. No consideration was given to whether a different bullet, fired from a different weapon at a different range might also have produced the same results.
The entrance wounds in the tests were always smaller than the exit wounds, whereas the reverse was true in Connally. Olivier concluded this was because in Connally’s case the bullet was yawing (travelling more sideways than end on). But in his tests, the bullet always hit the wrist nose-first. Where were the tests for yawing bullets through cadaver wrists? There were none. . . .
A further test was to see whether a Western Cartridge Company 6.5 mm, copper-jacketed bullet could break a rib and remain unscathed. The testers shot 11 anaesthetised goats, X-rayed their chests, and collected the bullets. Only one such experiment was presented to the Warren Commission, probably because the results most closely matched the desired outcome (fractured rib and intact bullet). Disreputable as this is, even here the intact bullet (CE853) was far more flattened than the alleged single bullet from the JFK assassination (CE399). All the bullets fired should have been exhibits, but we are left to wonder about the condition of the other 10 unfortunate animals and the rounds that injured them. . . .
As the Edgewood Arsenal tests were about to begin in April 1964, to help deal with the incompatible medical conclusions, the Commission convened two conferences. An honest investigation would have noted that the memoranda of these meetings caused more problems for the single-bullet theory than they solved. Instead, they were then hidden and never referred to in the Commission report.
Warren Commission lawyer Norman Redlich and Assistant Counsels Melvin A Eisenberg, and Specter held the meetings on 14 April and 21 April 1964. At the first, according to Eisenberg, a group met, ‘to determine which frames in the Zapruder film portray the instants at which the first and second bullets struck.’ Drs. Boswell, Finck and Humes (JFK’s autopsy surgeons) were there. The FBI was represented by Inspector Leo J. Gauthier, Inspector James R Malley, photography expert Lyndal L. Shaneyfelt and two others whose names are not given. John Howlett (from the Dallas office) and Thomas Kelley (later Assistant Director) appeared on behalf of the Secret Service. Edgewood Arsenal sent along Drs Light and Olivier.
Eisenberg produced a three-page memo destructive of the single-bullet theory. It explained that ‘. . . the bullet recovered from Governor Connally’s stretcher does not appear to have penetrated a wrist.’ The memo also suggested the facts better match a different theory regarding Connally, ‘. . . if he was hit by this (the first) bullet, he was probably also hit by the second bullet.’
Of the 15 people there on 14 April 1964, including five doctors (three of whom were experts in wounds) and two FBI photographic experts, only Specter, the Warren Commission enthusiast of the single-bullet theory, believed JFK’s alleged neck wound and all of Connally’s wounds were caused by the same bullet.
Present at the second meeting on 21 April 1964 were Mr. and Mrs. Connally along with Dr. Charles F Gregory and Dr. Robert R Shaw, the doctors who had treated Connally in Dallas and had the closest look at his wounds. The FBI sent along Gauthier, Shaneyfelt, and one other unidentified agent. Assistant Counsel David W. Belin, Eisenberg, Warren Commissioner John J McCloy, General Counsel J. Lee Rankin, Redlich and Specter represented the Warren Commission. From Edgewood Arsenal, there was Drs. Dolce, Light, and Olivier.
This time, Eisenberg produced a two-page memo which, again, the Warren Commission could not find room to include. Once more, the memo was troublesome for the single-bullet theory, particularly the final paragraph. ‘In a discussion after the conference, Drs. Light and Dolce expressed themselves as being very strongly of the opinion that Connally had been hit by two different bullets, principally on the ground that the bullet recovered from Connally’s stretcher could not have broken his radius without having suffered more distortion.’
Of the 16 people there, including five doctors, all of whom were experts in bullet wounds, Specter alone believed the single-bullet theory. (pp. 40-41, 45, 47-48, 50-53, emphasis added)