I did an autopsy on a couple of hogs I shot and recovered the 45 ACP bullet I used on each of them. One was a 200 grain JHP; the other was a 250 grain cast.
The HP expanded from .452 to .581, and weighed 196 grains. I got it out of the exit-side half of the hog's shoulder.
The Cast bullet didn't exactly expand, it deformed and went from .452 to .434, and weighed 248 grains. I recovered it from under the skin on the exit side of the hog's head. Both shots were made at around 15 yards on hogs that were in my large trap. Both hogs died quickly and with no follow-up shot required.
I've used both kinds of bullets before and have found, not surprisingly, that the cast bullets will do serious damage to any and all bones they encounter. The JHP's are devastating on the organs and tend to have better "one shot stopping power" than the casts. If the casts don't hit bones, they pass right through, just like a FMJ, with a minimum of damage; only a .45 caliber hole.