My current go to shot shells in both the 16 gauge and 20 are Fiocchi Golden Pheasants #5 or #6. Usually if I run into quail its while I’m hunting pheasant so the same loads are used. For a dedicated quail hunt I’ll use just about any 7 ½ load I can find, the same is true for dove.
I used to shoot a little of everything or whatever was on sale, but I think I’ve noticed a difference in the number of wounded birds vs dead right there, since I started shooting the GP a number of years ago. Additionally, I seem to notice when cleaning birds that the GP have better penetration than the standard lead shot. (sometimes I do use standard lead when I forget to order some GP
