My vote goes to the Core-lokts. They are cheap and plentiful and usually shoot pretty well. There is no need to use anything fancy in my opinion. Hogs are tough, but they aren't water buffalo. That core lokt bullet will do the job just fine.

I haven't had one walk away after being nailed w/ .30-06 and 150 gr corelock. All have exited out the other side. (120yards)