As stated above...I hunt doves, wabbit, and quail, and prefer improved cylinder for the most part, w/ 7.5 shot. Late quail, and Late dove, and on really windy days, I bump it up to a #6 @ 1 1/8th oz of shot.
For turkey I swear by 3" mag #5. great density, lots of shot on full choke. They make some turkey tubes, but I have not tried them. My farthest turkey (not shot w/ a rifle) has been 26 yds. The closest was around 5 yds...at that range, it just takes their head off...