Hodgdons Triple Seven FFg exclusively.
I have been using wads and patches with the ball. I used wads with the Buffalo ball-ets. I don't know if they help or not, somebody told me they are good if you are blowing out patches with heavy powder charges.
Using 65 grains as I was, probably didn't need to use them. I don't think they hurt anything.
I forgot to mention the Powerbelts I tried. They were all over the box. That's why I forgot to mention them. I think they might do better with a charge up around 80 grains.
The barrel bore on my Deerstalker is bigger and the .530 balls pushed down easily. This gun needs a .535 ball and accuracy might improve. I'm using .015 patches and the .530 now on my GPR and it takes everything I have to seat the ball on the charge. It's not the case with the Deerstalker.
This target was the bottom target of 4 (at 50 yds) and it shows where everything went. I took this target off the box and shot more at 110 yds, so they are not on this one. This is balls, Ball-ets, Powerbelts, Great Plains and Maxi-Hunters. Notice that although it's pretty spread out there are no "wild" flyers. Thats why I was so impressed.