FM12; making shot is a learning experience in and of itself. You have to follow the guidelines and use pure antifreeze for best results. The shotmaker will run itself if everything is in order, and it's fun and satisfying to watch the perfect little balls fall. Hardness can be tailored by addition of tin and antimony just like cast bullets, and scrap lead if clean will work for most applications. Once you get the hang of it, it's no harder than casting, but washing and drying the shot is a tedious task. Adding graphite is optional.