Here is a quote from an autopsy report that shows the calibers were NOT determined from wound sizes:
“Recovery: severly deformed, medium to large caliber, partially jacketed projectile fragment from the petrous portion of the right temporal bone and a second severely deformed, medium to large caliber, partially jacketed projectile fragment from the musculature of the right side of the posterior neck.”
And yet the WEIGHT and Radius of these retained fragments is yet to be made public. But your blue pill toxicity prevents you from concluding what is obvious.