My nova shoots slugs rather well. I got mine when they first hit the market in Oregon. Paid 364.00 for mine(no sales tax there), I do not have any mods for it everything is stock. Used to have an old savage bolt action shotgun with a bulbous poly-choke on the end of it, use the same loads in it and was able to push the slugs out to 200yds just fine. I also use a super full choke on my benelli with number 4's are inside the diameter of a standard coffee cup at 25 yards. the choke extends about an inch beyond the barrel, which is normally 28''. 3'' mags are a joy to shoot, have yet to try ny 3 1/2'' mags, just haven't bought any. Mainly they are too expensive, and when I do have the money, good old bills catches up with me lol.
. I use number fours for quail, grouse, ducks, turkeys, squirrels, and rabbits. My gun and that shot size pattern rather nicely. Many auto lovers, who have shot my benelli, were newly converted to pump action lovers.