I used to use #6s w/full choke (fixed) for pheasant and grouse. The past couple or so years I have taken up duck hunting again. Most of the places I hunt upland game are in close proximity to waterfowling ops. So, to take advantage of this, I have gone to a 12g BPS and i/c choke. I have been working with Black Cloud this year in #4s for everything, last year and the one before, I shot #6 Hevi-shot with great results, albeit expensive.
Strictly grouse and I often shoot a 20g w/#6 or 12 with 7 1/2s.
