Phil Sharpe's eighty-year-old classic work on handloading shows a "148 gr. Factory Lead" bullet loaded to a seating depth of .350" (so probably not a wadcutter) and 3 grs. Bullseye for a muzzle velocity of 810 fps. A corrosive primer was used with this load. What effect that has in comparison with modern primers, I don't know. "Breech pressure" is listed at 12,000. Load was recommended by Hercules. I would certainly start below three grains.

Twenty or so loads are listed with bullet weights between 125 and 160 grains, but all powders except for Bullseye are long obsolete.