[Sevens]

Great post but I want to mention that while getting loads from a reputable source is a large part of safely getting in to handloading... the genius of the load manual is to learn what you are doing and hopefully, what goes on inside a cartridge when the hammer falls. Use the manual to help understand what pistol powders do and how they give the results we want and how and why using a pistol powder in a bottle neck rifle round when you don't really understand the interior ballistics... is kind of like building a destructive device.

Load manuals publish long listings on paper of different combinations, all of which is "current" at the time of publication and some of it ages better than others. But the real value in a good load manual is the instructive and informative part that makes up the first 20% of pages in the book.