[Drdogface]

I recently bought an original 1861 Springfield rifle from the Civil War era...58 cal muzzle loader but is a rifled bbl. I used to shoot these originals back in High School and I want to shoot this one. Now I have loaded and cast bullets for BPCR shooting (BP cartridge) out of 20:1 Lead:tin but something tells me that pure lead would be required for shooting this old lady.

I have pure lead but would have to drain my lead pot to start over with pure stuff so let me know what you experienced guys think.... Pure lead or 20:1