Yes on casting my own. Molds can be had all over the place but MidwayUSA, F&M Reloading, and Midsouth have good pricing. What rifle are you shooting?

You would need good lead, a melting pot and ladle, and things you could just find around the house in addition to the mold/s. It can be very cheap or very expensive depending upon how deep you want to go into the hobby but is very satisfying to shoot a bullet you cast and get great results.