What can I say, Texans, gotta luv 'em. OOPs I are one. Nevermind.
CC, I believe the story is entirely credible and I though you were recalling the exploits of the late President of S&W, who did intentionally shoot PB with a fairly powerful .357. I believe that shooting one intentionally like an assasin and shooting one that bolts onto your path is a very different phenomenon excasebated by adrenalin in both parties involved. Personally, I would be carrying a .41 Magnum, because experience through handloading and confidence with shot placement are my criteria for selection. I am not going to recommend this to anyone else. If one chooses to risk being eaten by a hungry Griz, he is entitled to hold his choice of handgun while he may be feasted upon by the Bear!
Black Bear, is a little less risky, especially when in a static hunting situation, so I don't have an oppinion about the .357 for that use. I'm still using a .41! I don't have a problem with the .357 for Whitetail Deer if the Hunter is capable. Attacks are rare, but they do happen and I always carry when I hunt, Rifle or not. We do have rattlers and in warm enough winter weather, which is more often than the freezing kind, They venture out from time to time also.
If you want to use logic and sound reasoning in limiting the size of game to either caliber as you should, I'll stick by my guns. There is no game animal you should hunt with a .44 Magnum, that you can't take just as effectively with the .41, provided you know what you're doing to start with!
There is one more worth mentioning for the trail gun protection scenario and it is a 4" DA revolver. I have not fired one yet, but ballistics are tailored to the use of a 4" revolver and power is as good or better than the .41, or .44 purely from the standpoint of using shorter barreled revolvers and that would be the Dan Wesson in .460 Rowland. It will also fire .45 ACP and Super so you can work up your recoil tolerance level and have a gun that is very practical for a number of uses!