First off DJ - I use #3 Steel for Ducks and BB fSteel or geese. I ahve found I get more birds per shot fired using Black Cloud. I have also spent time at the patterning board as choice of choke with these and its Improved Cylinder in my 12 Ga Benelli. I onlu use 3 Inch rounds.
For pheasant I still use lead unless I am hunting some WMA that requires non toxic. For Lead I use #5 or #6 in 2 3/4" My Choke is Modified and Full in a Over and Under 12 Ga.
For Grouse, woodcock I use a 28 ga - 3/4 oz 7 .5 shot with chokes of Cylinder and Skeet. Shoointg is up close and in tightthick cover.
Rabbits I no longer hunt.
And a 3.5" shell to me is a waste of money- offers me nothing I can't do with a 3 inch round for waterfowl and 3 inch is a waste of money for upland.
JW