I made a few "custom" loads for mine a while back....as I recall there was a 00 buck, some #2 buck, and some #4....I think...something like that...I recall that the 00 buck was just about perfect fit inside the wad
never shot any...probably wouldn't be fun...BUT not intended to be fun
I'll get someone else to shoot it before me...someone that I don't particularly care for...

:-)Rocky