Best brush gun for stalking I would say 45-70. That dude will shoot thru a sapling and still kill what ur shooting at. General purpose I use a 308 with 150gr HP Winchester. They work very well on hogs.
I carry my marlin 45-70 pretty much every where. Recoil isn't bad and it will flat out put down any hog. Ammo is fairly easy to get and fair priced. The marlin guide gun is a compact rifle and won't weigh you down.
Some folks I have hunted with call it a major over kill and in some situations it is. But no matter what you know you brought enough gun.