a good ol 44 mag would suit me just fine. add a box of 44 specials, a box of your favorite weight 44 mag factory ammo, and a box of some speciality 44 mag ammo like buffalo bore in your favorite bullet weight and you're good to go for any animal on the planet from man to elephant. you also have the benifit of a lower inital cost for the firearm and lower cost of ammo and the added advantage of a variety of firearms from semi auto pistoles to single and double action revolvers, even single shot pistols.
ya only got 1 arm and ya carry 3 guns for Christs sake. Well I don't want to get killed for lack of shooting back.