well I am kind of in the same ball park with the previous posters!
I used a 41 magnum to hunt hogs ( this was true german/russian boars) that are a bit tougher (ie: they run at you not away from you), but I think a 45 acp with a 230 grain FMJ , hard cast, truncated jacket would serve the purpose.
The 41 mag would put these rounds completlely through the hog unless you hit them charging and in the front plate.
but they didn't seem to like to die without a couple three in them.
As for personal protection, the chosen round MUST be 120% reliable in function in the weapon!
after that i lean to a 200 grain pill in any of the modern designs but tend to lean to an all copper projectile or the Speer gold dots.