I have ~ 50 reloading manuals, but do not use them anymore.
I started reloading 12 years ago.
I now reload; 19 Badger, .222, .223, 22-250, 6mmBR, .243, 25/35, 257 Roberts AI, 260, 270, 7x57mm, 7mm Rem mag, 30-30, 308, 30-06, 300WM, 7.62x54R, 8x57mm, 338WM, 25acp, 32acp, 32sw, 32S&WLong, 32-20, 7.62x25mm, 303Sav, 7.62x39mm, 7.5Swiss, 303Brit, .380, 9x19mm, 9x23mm, 357 Sig, 38 sp, 357 mag, 38sw, 40sw, 10mm, 10.4mm, 401 power mag, 44mag, 45acp, 45Colt, and 45/70... and others.
Now I find a starting load with Quickload in guns stronger than the brass, like bolt action rifles.
Then I work up.
When I find the limit, I subtract a safety margin.
Now I find a load with Quickload in guns weaker than the brass, like 45 Colt revolvers.
I stick with that load.
I do use a set of SAAMI chamber and cartridge drawings with toleranced dimensions that are in Davis' book:
Amazon.com: Handloading (9780935998344): William C. Davis: Books