They're all updated periodically but I guess a lot depends on the bullet brand you use as most are product oriented. Generally, I like Sierra and Hornady bullets so those are the manuals I use the most;
- Sierra Rifle & Handgun Reloading Data.......Edition V
- Hornady 2 Volume set............................6th Edition
- Speer..................................................# 13
I don't use them much but also have;
- Nosler..........5th
- Barnes.........3rd
One of the ones not really product oriented, Lyman;
- Cast Bullet Handbook..........1st Edition, still in use
- Cast Bullet Handbook...........3rd Edition
- Pistol & Revolver.................3rd Edition
- Shotgun Reloading...............4th Edition
And to round out things a little;
- Ken Waters Pet Loads
- P.O. Ackley 2 Volume set.
Oh hell, get 'em all. You can have too few but not too many.
