One last bit of advice for getting into cast bullets:
Get the Lyman Cast Bullet Handbook...the leading authority on cast bullet making and loading.
AND...don't make the same mistake that I and many other new cast bullet loaders make. The cast bullet in modern bottlenecked calibers is NOT suited for jacketed bullet velocities. Sure, in most pistol calibers and medium-to-large bore rifle calibers, cast bullets can shine and duplicate factory velocities. .30-30, .35 Remington, .358 winchester, .375 H&H, .444 Marlin, .45-70, etc come to mind. For most of the rest, you need to use reduced loads for acceptable accuracy. Also, the popular .30 caliber is a good rifle to start with because of the many good .30 designs.