What reloading manuals have the most  load data listed for 10mm?  I have Lee 2nd edition, Hornady 9th, and speer #11 which doesn't show anything for 10mm.  Does speer 12 or 13 have 10mm data?  I have powders longshot, power pistol. Hornady shows some  but would like some older data if I can get it. 

The most loading Data for 10MM can be found right here.

Doug

i know speer 14 does have a little

http://www.alliantpowder.com/resources/catalog.aspx

http://www.hodgdonreloading.com/

http://www.accuratepowder.com/load-data/

http://www.lapua.com/upload/vihtavuori_reloading_guide_2015_eng_ed-14_w.pdf

that should get ya a start on the new stuff

Lee has the most data for 10mm of any manual I own.  I also have Hornday, Speer and the two most recent Lyman cast bullet handbooks.  Not at home so I can't comment on which Hornady and Speer I have, but they are both several years old.

For many of the old manuals you can also look here:
http://www.castpics.net/LoadData/Freebies/default.html