Bill,
There is or was an excellent supply store in Springfield. I have a friend who loads in Roseburg but since I lost my address book last week I'm at a loss. I have also been traveling and am out of touch.
On Brass shell we use a # 11 wad in a 12 shell. It keeps it all tight. On my pinfire shells I use 72 grains of 2fe, it does work on Alaska Sea ducks.
jas

Currently own two Morgan cars. Starting on Black Powder hunting to advoid the mob of riflemen.