The WC holds that JFK was struck in the lower rear half of his skull at Z-313. That puts his skull between the bullet that struck him, and the curb near Tague.
Some WC-backers contend the bullet-strike to JFK's skull caused a "jet effect," of matter exploding to the right of JFK's skull.
Jet effect is a real phenomenon but probably not the primary cause of JFK's rearward movement. That was likely a neuro-muscular reaction to the massive brain trauma.
There are blow-outs on the right-side of JFKs skull in available x-rays, but none on the left.
Hard to see how a lead fragment could have squirted out of FMJ hitting the lower right of JFK's skull, and which caused a blow-out on the right-side of JFK's skull...but then a lead fragment went over left towards Tague.
When the bullet struck JFK's head, he was leaning hard to the right. The would have rotated the upper right side of his head toward the top which is why we see the dispersion of blood and brains going forward and upward in Z313.
A handgun fired from the GK would not have used a FMJ, but rather an ordinary lead slug. Only lead was detected on the curb strike near Tague.
There was no handgun fired from the GK. If there had been, the shooter would have had a choice of lead bullets, FMJ bullets, and hollow points.
Maybe a handgun is the source of the Tague strike.
That's as dumb as anything you have ever written.
I have never read a compelling explanation of the Tague curb strike. LNT or CT.
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I by compelling you mean provable, you never will. The cause of Tague's injury will remain a mystery. Unlike the bullets that hit JFK and JBC, we can never prove that.