Rifled barrel for shot loads? In one word...No.
If you have a 'shot cup' load, such as the way most modern shotgun ammo is made, the rifling will "spin" the shot cup, and you get the doughnut pattern...sort of a circular pattern, with a HUGE gaping hole right in the middle of the pattern.
If you have 'no shot cup' loads, then the rifling tends to highly distort the pellets, again resulting in poor patterns...and very quickly builds up a lot of lead on the rifling, aggravating the problem.
I have verified those things for myself...I did have a rifled barrel loaned to my by a shooting budd a couple of years back...sabot slugs were great, shot shells were not worth a hoot-in-Hades through the rifled barrel.
For the rifled barrel, the only thing that works well in it is the 'sabot slug'.