For a fun load for grouse, try 5-6 grains of bullseye under a 32 cal lead round ball.
Must be single loaded! Size and expand the case, and just push the lead ball in by setting it on top of the case, blocking the die with a scrap of metal, and runing the ram up until the ball is seated about half way.
Rub a little lube, or even grease on top, and your set. You can crimp it if you like to smooth down the mouth of the case but go real easy, the ball is very soft.
It should be 'on' at about 25 feet.
Be VERY wary of double charges when working with bullseye.