Thanks to Johnny for a previous heads-up, I recently picked up a magazine style book entitled RELOADING Hodgdon 2014 Annual Manual. It was at the Quincy Winn Dixie. This manual does have 9mm loads for W231 and HP-38 for almost all of the bullets types and weights listed. I am only using Tite Group since I had more of that. I do like 231 in my 45 acp. If I had an equal amount of W231/HP-38 I would use it just to stay with the same powder for all pistols.