I've been using Xtreme's plated rnfp 158 grain with Titegroup. I will likely switch to another powder when I run out of Titegroup, assuming powder options are still available then. I'm using the higher end of lead data. I have not had good luck with 125 grain in .38. Accuracy issues.

You must be careful with most powders in a .38 case. I use a powder check die religiously with both .38 and .357. 9mm, I just look at the case prior to seating a bullet. If I am over by much in a 9mm, you can easily see it.