Out here in WA. the concenus is the 348grain Power Belt, with 90-100 grains of 777 or Pyrodex. I am also using the Black Daimond for the first time this year and so far 100 grains of 777 seems to be a little much, gettin quite a bit of unused powder resiude, so I think I'll tone it down to 90 and see then?

But you do need to find out what components are legal in your State first?