You go to any Potlatches and you’ll see 10-20 30-30’s on floor to be given away. Indians have shot more interior grizz with 30-30’s than any other gun.
Personally, I carry a S&W 460 mag or an old 45/70. The 460 leaves barrel at 2200; will put quarter size holes thru 1/4 inch plate steel.
Try a small rubber band and a very small stone, much more effective. (You should see the other guy.)