Mossberg 500, 535, or 835
sorry, not a Remington guy. But Mossbergs, Rem's, Winchesters, etc-they will all get the job done. Just put some to your shoulder and see which feels the best. The way it feels in your hand should be the determining factor.
Semi-autos are nice, but a pump will do you for turkeys. There's not usually a follow-up shot.
I agree to skip the scope. There are many fiber optic rifle sights that will serve you well. And a 3" chamber will do for you I'm sure. I have a 3 1/2" gun but I shoot 3" Hevi-13's out of mine with an aftermarket choke (Indian Creek) and I get a lethal pattern at 50 yards.
Go look at shotguns and I'm sure something will jump out at you.
IMO
rw