I have aa old Savarge modle 24, 22WMR and 410 O/U that's good for just about everything. From rabbits and quail, to deer and geese...you do have to make every shot count though. For other things I have a 12 ga, 2 16 ga, and a 20 ga shotguns, and rifles in 7.62x39, 7.62X54, 30-30, 8mm, and pistols in 32, 9mm, 38 Spl, and 380 ACP. And don't ask how many single shot 22s or pellet guns I have...I honestly don't know, I've lost count.
If I were going to bow hunt I'd use a compound crossbow.