I agree on the Lyman Cast Bullet Handbook,the old edition is still around but Lyman is releasing a new Cast Bullet Handbook sometime this fall,it will have load data for Lyman and selected Lee and RCBS bullet mold also.
The regular Lyman reloading manuals also has cast bullet data for Lyman molds with nearly every caliber although the data is not as extensive as in the Lyman Cast Bullet Handbook. You can still use your cast bullets made from Lee and RCBS molds or commercial cast bullets if thats all you have buy selecting data from one of the Lyman molds that is similar in weight and design and work your load up as you would any jacketed bullet load.