Bloody hell, mate, are you going for a mooch or a one man overland trip across Africa??
One thing's for sure, you'll not be wanting for kit.
Apart from the obvious gun, pellets, etc.... I always carry a good knife, twine for carrying game, phone (on silent...), fags and a Zippo and thats pretty much it. I just make sure I'm dressed for the weather, then off I trot.
Cheers