I use Hornady SST Sabots out of my Remington 870 with an 18in rifled barrel. I am good up to about 100 yards. I could prob make the shot farther but I'd rather make sure and kill the deer rather than injure it. Best thing you could do is go buy a couple different rounds and try them out at the range and see what does best in your gun. What will do well in ones gun may not do well in yours. As far as a scope I never saw the point on a shotgun.