was a 68 cal . I knew nothing about muzzle loading but I got The shooters bible of muzzleloading It was 1976 I had 3 beautiful molds and I was silly enough in my youth to give them away. Soon I might be the owner of a 68 Cal musket clone Rifle not carbine. If this happens I am going to need a hollow base bullet mold . Just seeing if any are available here first. Maybe even borrow one to cast a pile of bullets .I don't see myself shooting it much but taking one off the bucket list. uncowboy@comcast dotnet Thanks. J.Michael