Thank you. I have found a few loads that reference Fiocchi hulls, but I cannot find those.

I use Cheddite or Fiocchi, but stick with one (or the other) as it requires readjusting my press (9000) Fiocchi doesn't last as long, but I don't push my hulls beyond 4, maybe 5 cycles.
As an aside, I recently bought a Grabber (for 2.5" 20ga), and like it way more than the 9000.

Graff usually has them, as does BPI, but in 2.75", and I trim them.

I picked up some HS6 for 28 ga loads a couple years ago, but have yet to try it, 17.1 gr was the recipe.
I've got enough 20/28 to last me a lifetime since I mostly hunt, and don't shoot many clays.

20/28 is a great powder but the pressures are very high when used in the 28. There are better, cheaper and more available powders for the 28.