If a Polar Bear shows up here, I expect ole Huff will have him up a pecan tree in no time. I'll make my decision then on what to use.
I thought I had a polar bear cub in my trap this morning, but my wife came out, rolled her eyes, and said it was somebodies' cat. Either way, it won't be back, and to tell the truth it did look a lot like a cat I had seen prowlin the neighborhood.
SHOOTALL to answer your question on what I might use, I'll probably use the ole 3030. I've never shot a polar bear with my 3030, and I figure if them Eskimos can kill'em with their 223s, a 3030 will work just fine. I'll let ole Huff worry him a little first though to get the scent. There's no tellin how much a Jack Russel trained to tree polar bears would be worth around here. Not that I'd sell him of course, but I could rent him out.