I will be headed up to Glacier National Park soon and I am told the area is heavily populated with grizzly bears. Also, because it is a National Park I know that long guns are not allowed, but I can legally carry a handgun with me concealed in the Montana side of the park. I know using a handgun to defend myself against a grizzly bear will be futile and in all reality I pray never to be in that situation. I've only had moderate experience with big bore shooting and it would only be a last ditch effort. I will be carrying UDAP bear pepper spray as my main source of bear defense, but in the case where the bear makes it through the spray or the wind is just too strong, I would like to have the handgun as a backup. Mainly, I think shooting the gun, itself, rather than shooting the bear, would deter it from a charge or would probably help scare it away. Also, I know there are a lot of black bears/cougars in the park, which I would feel more confident about the use of a handgun for defense. Anyway, I have a S&W m460v and a S&W 629. I will be carrying the gun in a chest holster I have from Simply Rugged. The 460v is a tank and weighs a good 5 or 6lbs loaded , although on the chest I am sure the weight will be more balanced. My 629 is a lot smaller and quite lightweight, for me at least. My 629 also is a 4" barrel and my 460v is a 5" barrel with a compensator. Considering, that I would probably use the gun to scare off a potential threatening bear versus try to stop it in its tracks, I am hearing a 460v has the potential to cause serious hearing damage without ear protection. I am wondering just how bad of hearing damage it can cause if I used it to fire a warning shot. I know the 44mag would not cause the type of hearing damage without ear protection as the 460 round. Also, I can handle the recoil of the 44mag better if I did need to use it, lets say against a black bear or a last ditch effort against a grizz. I do have 320gr hardcast Corbons loaded in my S&W 629, but I know that is more likely not a powerful enough round to stop a grizzly with my inferior shooting skills. The weight is not an issue for me, as I am in good shape and a pretty hearty hiker.. Also, I will be doing day hikes, not a backpacking trip with a huge pack. So, an extra few pounds is not a problem. My main worry about the 460S&W is causing hearing damage if I end up having to use it either in defense or to fire a warning shot. I think carrying ear protection with me will be impractical. Especially, since while I am crapping in my pants, I will not probably think about putting it on. Considering my situation, what would other people here think be the better option as a bear gun/defense weapon in Glacier? I will also be packing my S&W M&P 9 with me on my hip for personal defense. However, my 9mm HP rounds I would not want to use against wild animals. That would be for 2-legged predator defense. I know it's unlikely I will have any problems in the park, but I am just trying to take some precautions. Maybe, I would be best not even to bring the big gun with me, extra weight, right? I know bear spray will be my best defense in almost any situation there..