A shoulder injury forced me to use my Beretta 391 with slugs last year instead of my Ithaca. Other than the extra weight, all positive! I am using a rifled barrel, Winchester 2 3/4 BRI Sabots @ 1350fps. Very tight groups out to 100yds, and manageable recoil.
A fellow with lots of slug shooting experience stated to me that shooting too high velocity slugs with rifled barrels are a problem for accuracy. Proved his theory in my shotgun!
That said, I would look at a new muzzleloader if that was an option. Boy are they accurate!
