I own 5 or 6 reloading books. The one I reach for 99% of the time is,, Richard Lee's Modern Reloading
Yeah it's weird, but I usually find what I'm looking for in the Lee book. I own the Lyman and Hodgdon books. Lee took the load data the manufacturers made available and put it all the book, while I believe Lyman's is all original research? There are huge differences if you cross reference your loads. I don't remember which caliber, I think it was 7.62x39, but the Lee book says don't go over 31.5g of h335 and the Lyman says you're good up to 34.5.
What i especially like about the Lee book is the cast bullet section. I realize the Lyman dedicated cast bullet book is better, but when you compare Lyman's 49th vs Modern Reloading 2nd edition I have to give it to Lee for cast bullets. It goes into some awesome detail on pressures and reduced loads.
If you buy Lee rifle dies, the info will come with each set, so you're better off getting the Lyman book. If you're not buying Lee dies, you should get Modern Reloading 2nd edition.
I've spent time with every other reloading manual commonly available except Hornady, so I'm basing my recommendations on that. For all I know the Hornady one could be the best, or it could just cover their line of bullets and promote their products.
Do keep in mind the Lee book is frustrating because it's written like a grade 11 English assignment. Richard Lee just slams the competition and pumps up his own products for the whole first part of the book. There's photocopies, diagrams, and general rambling that should have been edited out, but whatever it's his book. Lyman does the same thing, in a more professional manner though.