Much of my hog hunting is done in small game season on 18,000 acres of federal property. On that property we are limited to shotguns and small shot and rimfire rifles in small game season.
Yeah, the .22 magnum is not a proper hog rifle, but i've killed a few dozen wild hogs with it. A few of those hogs weighed over 250 pounds. My shots are limited to 50-60 yards. The round used is the CCI 40 grain total metal jacket. Like everything else bullet placement is very important. Hogs to about 150 pounds are shot low behind the front leg-heart shot. Larger hogs are shot in the ear.
This hog was about 30 yards away from my tree stand drinking from a pond. After being shot this hog went further than any other hog i shot with the .22 magnum; about 75 yards.
This hog was killed with my Ruger 10/22. Distance was <10 yards.