"[CE399] didn't make a shallow penetration of [JBC's] thigh if it left a lead fragment in the femur."
FWIW, during his Warren Commission testimony, Dr. George T. Shires, who operated on JBC's thigh, estimated that the lead fragment that an X-ray showed embedded in JBC's femur weighed only about a tenth of a grain, i.e., not nearly enough to account for the 2-3 grains of lead core that, given that CE-399 weighed 160-161 grains before it was fired and only 157.7 grains afterwards, must have been squeezed out of the deformed rear of the bullet and broken off during impact.
But you seem to believe that JBC was hit by two bullets a few seconds apart: 1) CE-399, which, after transiting JFK's neck from behind around Z-193, deeply penetrated JBC's left thigh and somehow became substantially deformed and lost 2 - 3 grains of its lead core when it left a .10-grain lead fragment embedded in his femur, and 2) another bullet that was fired a few seconds after CE-399 and which not only pulverized JBC's fifth rib and smashed his radial bone, but fragmented so completely upon smashing said radial bone that one of the fragments ended up nicking James Tague down by the triple underpass.
Am I correct?