[Redbob]

Ammo is important: I shot one in East Tennessee a few years back, a cross between a feral hog and a Russian boar.
Using a .44 mag,it took me three shots; I'd made the mistake of using jacketed 180-gr hollow-points, when I should have been using 240-gr solids, or cast lead semi-wadcutters.
The hollow-points just blew up on impact without penetrating.

[RunningWolf]

I have heard that about the larger big boned thick skulled animals and hollow point (expanding round) ammo.

But still you got him, although someone that was not as good a shot might have choked and got only one round in on the boar hog.