Thanks again to all who replied. For economic and other reasons I purchased a Taurus Raging Bull .454 with 2 1/4 inch barrel. [I would have gotten the Ruger .454 Alaskan but, 1) I couldn't find one since apparently the folks up in Alaska buy about as many as are produced and, 2) The short Ruger is not ported and maybe the ported barrel on the Taurus will lessen recoil a bit without sacrificing too much in terms of power]
Let me quickly point out that, although a neophyte when it comes to firearms, I understand that longer barrels are better in terms of power, accuracy and probably other things. For my use however, a longer barrel would be uncomfortable when hiking, backpacking, fishing etc. and therefore I would be more likely to leave it in the vehicle or at home and I think everyone agrees that having an excellent weapon safely locked up at home or in the vehicle is not as good as having a pretty darn good one where you need it.
As for caliber, I now better understand that bigger is better but, in my case, wanting to use the revolver for enjoyable target shooting as well as self protection, pointed me in the direction of the smaller, lower recoil caliber.
Hopefully I'll never have to fire it in self defense but, if I do, maybe, just maybe the .454 Casul out of that short barrel will be enough to get the job done. If I do use it on my 3 weeks in Alaska trip I will tell the tale on this site assuming I survive well enough to blog........