FYI: To bring some of you old curmudgeons into the 21st century, here are some more recent powder data for reloading :...of Unique which is similar to the famous Skeeter load ...
http://reloadammo.com/357loads.htm
http://reloadammo.com/44loads.htm
The most recent data for the “Ruger” max pressures is 30k psi.
http://reloadammo.com/45cload.htm