Go to the websites for Alliant, Ramshot, Accurate, Hodgdon, and any other powder company whose powder you use; and request their free loading guides. Or, such as in the case of Hodgdon and Alliant, you can use their online databases, too.
We also have a fair amount of data, and/or links to other people's data in several threads here:
A search: http://thefiringline.com/forums/sear...archid=5974232
Our primary thread for data or links:
For the XTPs, the best data is in the new Hornady manual, and the 2012 Hodgdon manual (and their website); but my favorite loads are posted in the thread linked above. (Though I may only have .32 H&R data posted.)