Or, you can shoot 'em in the little clear area behind the ear. Just look for it, you'll see it. Trust me, no tracking. I killed a 400 pounder near Sabinal, TX a few years back and all we had to do was back up and load him, with some help. I do shoot a 7STW with 150 gr Trophy Bonded Bear claw in case I need the penetration, but I usually decide I don't want to track a big pig through thick brush and wait for the drop shot.
Oh, and another bit of advice, cycle that action (which you should always do) and get ready for them to creep back in. A lot of times if there is a loud bang and nothing runs off to spook them, they'll come back. Especially if you're hunting over corn or feed.