RE: Slug Gun Recoil
A 12 gauge using 2 3/4 shot loads is one thing, using slugs repeatedly at the range is another. Like eldeguello indicated above, A lightweight shotgun firing slugs has almost as much free recoil as some "elephant guns" in the .450/.470 Nitro Express class.
I agree, the one split-second shot (maybe two) isn't bad, especially during the hunt when adrenalin is up. But repeated shots at the range...well yes it is tough to handle after about 8 to 10 shots.
I figure reducing recoil for the primary purpose of shooting at the range sure wouldn't hurt (no pun intended) during a hunt.