I cast my own bullets, usually not too hard. Mostly wheelweights with a little tin added for about an 11 or 12 BHN. The more important thing with cast bullets is that their sizing be correct for your barrel and cylinder throats. You want your cast bullets, after leaving the case and the cylinder throats, to match or be about .001" larger than your barrel measures.
As far as reloading data, the Speer manual has a little; the Lyman manual has more. The info you have received on this thread is mostly spot on. If you decide that cast bullets are what you want to shoot (recommend same), then I would suggest also spending some time on the bullet casting section in the reloading portion here on the Campfire. Lots of good info there.
