Harter I'd be very leery of those bullets from your home made mould. All the conicals that I know of have bands on their sides to catch the rifle grooves and seal the bore. That's why bullet moulds are split so you can get the babys out after they harden. If your home made slugs have smooth sides they either won't fit down the barrel or they won't seal. A combo mould for 320 REAL + round ball will not break the bank and you can make decent ammo to your heart's content.