So did Haag admit that his tests proved that the lone-gunman theory's head-shot bullet did not behave like an FMJ bullet? No, but, oddly enough, he did admit that after his first set of tests (the ones where the FMJ bullets did not fragment), he did another set of tests in which he first cut off part of the bullets' noses to expose their lead cores! Think I'm exaggerating? Let me quote him:
"The noses of subsequent WCC Carcano bullets were slightly compromised to expose the soft lead cores for the subsequent shots. Just as with an impact to thick bone, these modified bullets immediately deformed and fragmented as they entered the melons, resulting in large exit defects and the expulsion of large quantities of the internal contents."
Sounds like he was creating hollow point or frangible rounds to see what would happen, sounds like he learned that he was wrong about the head shot.