Not a Fiocci fan, they seem to have rice in them.
That said, for years and years I shot pheasants and ducks with low brass small game loads (Rabbit & Squirrel). Same today with chukar. In the early season, or most of the time, I shot 6's. As the pheasants began to flush more wildly late in the season I'd use 5's or 4's, and both were deadly on geese too.
Lead retains its energy way out there, but really strings out along the way. Only take close shots on pheasants. You can make crossing kill shots on Huns, chukar, and teal at 60 to 80 yards with lead shot. You just need to give them a huge lead. Shoot, take the gun down, and watch the bird fly into the shot string and tumble way out there. (Does not work with pheasants, so don't try! You can hit 'em but they won't go down.) I don't recommend taking long shots like this unless you are hunting in fairly sparsely vegetated country, at a single (lone) bird, and you have a really good dog or two with you.
If you know math you can calculate the lead required fora crossing bird.http://library.la84.org/SportsLibrary/Outing/Volume_57/outLVII05/outLVII05h.pdf