ms86,
Welcome to the board! I use RST 1 oz. loads in all my guns for hunting birds like you mention, even my 2 3/4" guns. I've found that the sensible velocity and pressure improves my shooting. I usually use the paper/plastic wad shells for hunting, and their regular 2 1/2" shells for targets in my guns so chambered. Their shells in #7's are one of my favorites for Michigan woods birds.
I hope this helps,
Karl