I load 5/8 oz 20s for kids. Not just kids.......never ran a straight with a 5# 3 oz AS20EL till it was fed 5/8 oz weenies.

For that payload Promo/Red Dot/Clays works fine, GD would also work. CF Rem or WW hull, CB mint, puffed rice after shot drop. Needless to say, they don't cycle autos.