First of all, I'm a fan of Mr. McNett. He's a friendly, happy-to-answer-your-questions kind of guy.
I asked him over on GT what DT load he recommended out of a 3" XD in 9mm. He responded that 115 or 124 would probably be best, and gave me the following velocities out of a XD9SC. He also assured me that expansion would be well inside the Speer "window."
115 - 1285fps
124 - 1195fps
147 - 905fps
Didn't know if any of you folks had tried it our of your subbie before, or if this might tempt you to verify