This article put out by the gun experts at the Box O’ Truth is an excellent how-to on casting lead bullets for thrifty reloaders.
You might wonder why a person would want to go to the trouble to cast lead bullets. Some folks do it to save a little money, as cast bullets, if made from low-cost or free lead, are really cheap. But the main reason I do it is that I simply cannot buy exactly the bullets I want to shoot, so I cast my own. Besides, like most things gun-related, it’s fun to do. There is some expense to get started, as you need some basic equipment, but the more bullets you cast and shoot, the more profitable it becomes.
Now, before we start, let me emphasize that this is the way I do it. There are many other ways to do it, but this is the way I have done it for about 40 years. And, I have sent a lot of bullets down range in that time.