I have a bunch of shotguns, mostly Remington 100 and 11-87 in Trap, Skeet, and Hunting formats (including one SuperMag). I also have a couple of Browning Citori O/U. No doubt that Greybeard is right about O/U being the only way to go for target shooting. One of my Browning Citori could fit the role you are seeking as an all around shotgun. It started life as a 3" Citori hunting gun. At some point porting was added to the barrels, and an adjustable comb was added to the butt stock, as was a mercury recoil reducer. I've done well in both Trap and Skeet with it (comb up about 1/4" for Trap) and the 3" chambering and HeviShot would meet most of my hunting needs. I'd still use my Remington 1100 with Hastings Rifled barrel and 1X4 Leupold Shotgun scope for my deer hunting. (I live in a shotgun-only county, although muzzleloaders were just approved during the shotgun season.) Using an O/U for target work sure beats picking up hulls all over the place!
Suggestion if you decide on an O/U format: Go to a gun show and check out how various O/U shoulder and point for you. I personnally prefer how the Browning feels as opposed to the Ruger, and the fit at least psychologically plays into the different felt recoil between the two guns.