Which cal 32,45,50

[Ol' Flinter]

round ball moulds can be had from almost anywhere, amazon, Kal tool & die, Jeff Tanner, Track of the Wolf ,Buffalo Arms, Boomers Bullet Moulds

I would support local in Canada.... Kal Tool & Die and or Boomers first, then Jeff Tanner in the UK

Boomer never made round ball molds and regardless, I understand he has now been retired for a while. Try The Gun Room in Kitchener, ON or possibly Loyalist Arms in NS. btu for sure Track of the Wolf will have what you need.