As of right now I only have longshot, CFE Pistol, titegroup and Unique powder that would somewhat work for the 10mm. Right now Longshot is the best 10mm powder I have on hand. I will get some new powder that will work better for the 10 if I can get some new good get data. Most of my pistol loading now is for the 357 mag, 44 mag, 460 S&W and the 500 S&W. My goal is to find a good accurate stout 200 grain cast load for woods carry. Thanks for any help.