I still think the best defense against bears while hunting is still to be aware of your surroundings and not just wandering into thick stuff unawares. The grizz I've come across in the wilderness were heard before seen. If there is one that has appeared close, make human noise. Scare them off. Be ready to shoot. In the face or neck if you can. If you can't shoot straight, maybe it's best to carry a DG gun with DG bullets. I believe mental preparation is far more important than bullet, cartridge, gun. Our big brains are what have allowed us to make it this long as a race.
