Thanks to Stizzla, I was able to pickup some 15 pound cannon balls from a fella in Nanaimo by the name of Brian Roberge.
I reached out to Brian and confirmed he also has 18 & 20 pound cannonballs, they come plain jane or glow coated, round/finned with the added quality touch of stainless steel eyes!!
18 pounders: $55 for the plain jane type and $70 for glow coated.
20 pounders: $70 for round glow coated.
Brian can be reached via his FaceBook Marketplace account at the following link: