I don't hunt with dogs, just stalk mainly. I use my .223 more than anything. With 55 gr. Sierra Gamekings, I've had no problems taking any size hog I've run across. Here are two of the more recent ones:
Notice the second hog has two holes. One in the front leg because the rest of him was obscured by brush, and the second to the back of the head when he came running out. This is the only hog I've had to shoot twice with this gun.