Yes I would never use a .40 for hog hunting. We shot one that was wounded and crawling away with a .40 and it took 3 shots to stop it from 10 yards away. I've shot big boars with a .35 Remington and had the shield stop the bullet from exiting at 65 yards. Big boars are tough animals and I would rather have too large a gun than not enough. I've crawled through the brush too many times after a wounded one when someone thought their small gun was big enough to use on hogs. A wounded hog in heavy brush is no fun to deal with. I'd rather use a heavy gun and drop them and not have to worry about following a wounded one. sure you can kill one with almost anything if you get a perfect shot though we hunt them at night and you have about 3 seconds to shoot when the light comes on so you don't always have a perfect shot.