Depends where you are hunting, and on your luck. I've been out on days where the small hogs were 125lbs, and the big ones in the 250-300lb class.
As far as whether you'd go looking for the biggest, baddest hog, wpcexpert, in a way that doesn't matter.
I've known more than a couple of people who've shot one hog, only to have others come at them, instead of running away. I'd say the norm is that they'll scatter. Then again, I've had somebody else scatter a couple big ones right at me before.
If you go out in hog country, no matter what you are looking for, you may just run into that big, bad hog you didn't really want. I'd rather not do that with a birdshot load.