I would use a .22 rifle. The ammo is cheap enough that I always have tens, of thousands of rounds on hand. And like Brimmin said, it will kill anything you need. I would also use a muzzleloader. The powder is reativly simple to make, people have been doing it for thousands of years. Either in flinklock, or cap. Caps are not to hard to make either. And big bulls, Liberal tree huggers taste good if you use a little BBQ sauce. Just throw away the heads...They've had those up their you-know-whats for too many years, it would kind of foul the taste a bit.
