Been hunting birds a long time. I'm planning a big dove hunt during my state's late season in December. The hunt will be to celebrate my 75th birthday and my 65th year of bird hunting.
In my experience, most bird hunters use a choke that is too tight and loads that are too heavy. Try low-base field loads with #8 shot and an IC choke.
Works for me, YMMV.
Old Age Ain't For Sissies!