I personally have had good luck with the Remington Sluggers out of my Winchester smoothbore. The best thing to do is to pick up a box of everything you can find and see what shoots the tightest group at 40 yards or so. Then stock up and dial in.
I have been hunting with a smoothbore for a lot of years and I have never seen the need to move up to a rifled barrel. Yes you get better long range accuracy but you also need to buy much more expensive ammo and you have to carry a much heavier gun in the woods all day.
The real question is do you need that extra range for the kind of hunting you do? I decided many years ago I do not. I can shoot minute of deer out to 100 yards but the vast majority of my shots are well under 60 yards.
JMO,
Bob