Based on the parameters given I'd set up some tree stands and use a 30-30. Although for the anticipated distances we could easily be talking slug gun. Try the shotguns with different slugs and see what works. For many years I hunted areas that were shotgun / handgun only. Fully rifled shotgun barrels were a real game changer when introduced. If I had to replace my current slug gun I'd get a Savage 220 in a heartbeat.... A fully rifled 20 ga. bolt gun that shoots like a rifle; and a 12 ga. sabot isn't absolutely required. 20 ga. sabots work just as good even at a bit over 100 yds.. I've seen it enough to make me want one. But then, that area sounds like a great archery or crossbow spot, also.
