A demonstrably false statement. Click on "Melon 1" or "Melon 2" in post #212. For an explanation, read How a high-speed bullet damages an organ.
It is indeed unfortunate how people misrepresent effects.
The 'Melon 2' link (Melon 1 did nothing for me) clearly shows the downward angle of the bullet producing a rebound effect in the melon from the table. The matter exiting the melon did not propel it backwards but rather the rebound of the bullet's compression wave going through the melon lying on the table. That is why it bounced up and backwards. The amount of matter exiting the melon was nowhere near massive enough to propel the melon backward as in a 'jet effect'.
Tell me, what table was Kennedy's head lying on so that such a rebound effect could be produced? None. I saw this in documentary attempts to produce the same effect and they always rely on the rebound effect of an object lying on a flat surface.
In addition, Newton's 3rd Law of Motion requires that the bullet carry a forward momentum equal to the rifle's rearward 'kick'. It is impossible for a bullet to impart a rearward action once it leaves the rifle. Only a forward effect is possible and this entirely accounts for the rebound behavior of the melon on the table.
That is, of course, why I asked people to demonstrate using an 'apple on a string' or other such unsupported object. This approach more closely mimics the effect of the human head perched on the neck as opposed to an object lying on a table.
But, that is the point of the misrepresentation anyway. To produce the desired misleading effect by subtly changing the dynamics of the situation.