Take this with a grain of salt as I don't shoot competition but have learned quite a bit about shooting cast bullets in old rifles the last 5 or 6 years.  I assume that you are just shooting at the range so this is my approach to reloading.  First and foremost, do a chamber cast which sounds terrifying but is actually quite easy I found.  This allows you to see how much freebore you have and what the length and diameter of the freebore is.  I want my bullets to be at least freebore diameter.  I also want the bullet to be about the same diameter as the inside diameter of the fired case.  I use Accurate Moulds as my source as you can pick a bullet near what you need out of the catalog and then modify the dimensions and Tom will build it to your specifications.  I also like a bore riding bullet but I don't shoot much black so not sure how that works.  My 38/56 Roller with a long bore riding bullet shoots moa at 100 yards with smokeless.  If the bullet as cast is the proper diameter I pan lube and never look back.  If needed, I size after pan lubing so I don't collapse the lube grooves.  Now if the stars align, I can load my powder, add a wad and compress do the desired seating depth.  The bullet will be slipped into the case and might need to be seated with a die but I never resize the case.  I sometimes need to use a custom expander die from Buffalo Arms to open the brass if the bullet is too tight.  If so, I then set the seater for a very light crimp to make sure that the loaded case will chamber.  Being lazy, I always use a duplex load to help with my fouling.  My Ballard Pacific in 40-85 will shoot quite a few rounds with 6 grains of 5744 and the rest Old Ensford 3fffg.  Cleaning the bore is a snap but cleaning the brass is a major pain.  That is why I shoot smokeless in my HiWall and Rolling Blocks!  My Ballard shoots patterns with smokeless loads but shoots great with 3fffg.  Good luck.  Tom