A fast handling gun like a lever or even a pump would be my choice. I'd also go heavier than a 30/30, like a 308, 35 Rem, 356 or 375 Win., 444 Marlin or 45/70. A 12 Ga pump shotgun with short rifled barrelwould work just fine too.

If your style of hunting results in quickly fired shots through brush at moving critters I may go open sights, like a peep. If you shoot precisely fired shots through small holes in brush at standing or walking critters, then I'd scope it with a low power wide angle scope.