So I have a winchester 1886 with a .410 bore. I now cast my bullets in an ideal reloading tool that makes .406 dia 250grn bullets. I put two pieces of aluminium tape to open up the mold abit so I could shoot accurately. Now im looking for a mold thats around 300-325 range. I dont want to get it custom made, I live in Canada so the prices from the US are abit high.Anyone have suggestions?