Free: Contests & Raffles.
What do you intend to hunt other than deer? For deer hunting with a shotgun I would go with a 20 gauge. But if you want to hunt waterfowl or turkeys you'll want a 12 gauge.
I feel for the guys that have lost sight to the point to where they can no longer shoot irons ( I know it is not really lost sight but depth perception and focus before I am corrected). But I disagree with you, Loki, the sight should not cover the target, the top of the bead should be your aiming point not the center of the bead. I have heard people say the sight covers the target for years and never understood how they would use the center of the bead as the aiming point, it makes no sense. That is where some scopes get me, I am shooting a 1" aiming point at 200yds but my scope crosshairs cover the point of aim. With opens, granted I still have good sight, I can still pick a smaller aiming point than I can with most scopes at distance. Wouldn't shoot duck with a single shot but grouse, quail, chuckar, or pheasant I would not like to try shooting while looking around a useless scope.
He said all he wants to shoot is deer, grouse, and people.
I use combination guns a lot, but to get a decent one they can be spendy. Savage 24 work alright if you can get away with open sights, put a scope on them and they get very awkward. It really sounds like a pump shotgun with a spare rifled barrel would be what you are looking for. A Rem 870 with a spare slug barrel and cantilever mount would work great as you can leave the scope or red dot on the barrel and put the shotgun barrel on for grouse and ducks.Drilling 16ga x 16ga x 6.5x58R Sauer that I use for coyote hunting. I bought it as a non functioning wreck and spent a year repairing it and finding ammo.O/U Combination in 12ga x 5.6x50R Mag