Well...
I absolutely agree with all of you that a hardcast 9mm bullet "probably" would have done a better job of penetrating the skull. I strapped on the 9mm before the hunt as more of an afterthough than really esxpecting to USE it. It was loaded with my typical defense loads; I didn't buy anything specifically for this situation.
Now, seeing as my new Redhawk will be my hog defense gun, it will indeed be loaded with hardcast bullets, loaded HOT.
If I can find some cheap hardcast bullets, I'll buy some and do a little test with my next kill. If anyone wants to send me a few just for this test, feel free! :^)
Todd