Not to be negative, but why are you screwing around with a 2004 manual. You obviously have computer access so ----
Alliant Powder - Reloader's Guide
Look at more current data. It may still be the same, but why guess.
As far as the accuracy improving as the charge increases, well that's what reloading is all about. The manuals are basic recipies. You need to see what works best in your firearms.
What are you looking for the WC's to do? Target, defense, bullseye matches.
Keep posting and reloading.