RE: new turkey/deer gun..which one?
Well my suggestion would be to get an 870 special purpose turkey gun, then get a cantilever rifled slug barrel.
However, you don't NEED camo or 3 1/2 inche shells to hunt turkey. If you want to waste the money it feel free, but you don't have to have either to take game.
My buddy has the combo I mentioned above and it works just fine for him.
Paul