I heard back from Barnes bullets, regarding their W748 data. They said their data for that powder can be somewhat high pressure in some guns. But, he said that since I worked up to my load and didn't experience any pressure signs, then my load should be safe. That being said, it looks like W748 is a great powder for achieving standard H&H velocity with a short barrel gun. I feel like anything over 2500 fps is just right. So, I am satisfied with my results for sure.