Doug
You appear to be more experienced with the "4th shell" guns than me, which surprises me that you would ask why. My answer to that is why not? I am not a big waterfowler, but I don't understand plugging a shotgun anyway. As long as I don't shoot over the limit, why not allow an extended magazine? Waterfowl laws are the main reason that I am not more into it. I hunted waterfowl alot as a kid when lead shot was legal and the "point system" was still in effect, but there are too many "rules" in that game today for me. I actually have private access to several miles of river in NW Oklahoma right next to a refuge, and the duck and geese are THICK! My Dad, brother, and youngest son go quite often and kill a limit every time, but it is just not my cup of tea.