Well I finally broke down and bought a Lyman cast bullet handbook 4th edition. Bought it here on the forum, and it arrived today. I skimmed through it and am somewhat disappointed. I've not read any of the articles yet, but I'm looking forward to those.
The disappointing part is the lack of data for Lee bullets. There is some, but not nearly as much as I'd expected given the popularity of lee moulds.
Overall I'm happy, but I am hoping we won't have to wait too long for the Lyman 5th edition and that it's chocked full of lee and RCBS and other cast bullet data.