I've got about a dozen or more manuals. I tend to collect them, have new and older ones. For the most up-to-date information though, you can't beat the 'net. Most of the mfgrs have load data on their sites.
www.norma.cc
www.hodgdon.com
www.lapua.com/vihtavuori/
www.accuratearms.com
www.starlinebrass.com
Just to name a few I have bookmarked.
[This message has been edited by fal308 (edited June 02, 1999).]