.54 cal minie ball accuracy issue
Are you casting with pure lead?
Minie balls must be cast in pure lead. Any alloyed compositions like lineotype or wheel wieghts will not allow the bullet to upset and take the rifling upon firing.
Also if you make a paper cartridge as used in the civil war, the paper will act as a wad over the powder and expand when the bullet it rammed home to keep it from falling out until the rifle is fired. Hope this helps.
"Shoot today, Hit tomorrow"