anyone in here shoot black powder metalic cartridge. 45-70 /40-65. and what do you shoot?

I have just purchased a 40-65. I now need to start casting, so I am slowly gathering the needed items.
Without having shot the rifle yet my first impressions are very positive

i have a few bullet moulds for my 45-70 never really had much luck casting for it. big bullets are hard to cast. for me any way
im shooting a pedersoli sharps. couldnt wait the years for one to be made local. very good shooter