RE: Slugs with smooth bore
The front bead sight is really a minus as it just doesn't give an accurate point of aim, just like a general area that is much too large (for me). Why not look for something in between a fully rifled barrel and a smooth bore? A shorter smooth bore barrel with adjustable rifled sights like were so popular with all the deer combos offered in "years past".
Course you can pick up an H&R Ultra Slug Hunter for like $190 in 20 ga.. I did for my oldest son, it's like a little brother to my 12 Deluxe.
Uncle Matt (in IL)