goodshot,
I can't speak directly to your combination, but I can tell you about mine.
I had a vent rib .357, that I mounted a heavy 1X4 scope, using Burris clamp on mounts. After 10's of thousands of heavy to very heavy rounds, I never even had to tighten screws.
However... I've spoken with the current folks at Dan Wesson a couple of times, and they strongly advise against "clamp on" style mounts. I take it they have had lots of problems with them. They or any local smith can tap your shroud for their current screw on mount, which they seem very confident it.
Good Luck...
Joe