Looks like I'm in uncharted water on this so I tried it on my own. First I lubed the .433 balls with Lee Liquid Alox and let them dry overnite. I fullsized the cases and flared them just enough to start the ball. Iseated the ball1\8 inch below the case for the redhawk. I tried leaving the ball out of the case enough to round off the bullet so it would work in my lever marlin but it would not feed so I shot it single shot.I used
unique powder and tried 3 loads I started out with 3 grains in my redhawk
and it was weak so i did not check the accuracy.

These 3 shotgroups were shot at 25yds.
Redhawk 6grains unique 1 1/2 Marlin 6 grains unique 7/8
Redhawk 8 grains unique 3 1/2 Marlin 8 grains unique 1 5/16
Looks like 6 grains is the best I'll use them for squirrell and plinking.

Martinfaw