I shot some awhile back and used the Lee load data. I think I used the HS-6 and shot out of my 20" double coach gun. At 50 yards they all stayed in about 6"ish. I didn't spend much time with different loads seeing what would shoot the best.

I did shoot some cluster Bombs and they shot really well. Most shots were within 2" at 50yds.
I loaded on a Lee Load all, so everything was kind of low budget, but they were fun. I play on loading and doing more now that I've got an 1887 12ga lever gun to play with.

I think I'll try the roll crimp tool instead of crimping with the load all.
I ordered a couple of different wads, but didn't get the right ones to fit the drive key.

I have the Lyman 1oz mold now and cast some with the base plug in the right place and then some with the base plug held out about 1/8" for a heavier slug. Maybe load these backwards for a huge hollow point?

I have a Dixie .733" round ball mold to try also. Maybe I can get 3 in a case with just a thick cardboard wad over the powder.