The Lyman 49 is my favorite although I also have the Lyman Pistol & Revolver Handook along with my Sierra, Lee, Accurate Smokeless Powder book and a number of manufacturers downloads from the web. I also have a number of old manuals for reference. They really pushed the envelope in the old days, todays manuals have much lighter loads in them.
I've read them all from cover to cover and learned a lot of little things what were important.
Finding a good load is one thing, then I use a chronograph to test them for speed which is never exactly what the manual says. I also test everything for accuracy.