Kay Clark Miculek runs Donnie's 135's in her open 38super. Super or 9 will run same velocity. I intend to give the 125's a go once my super is built. Won't know unless I try.
I have seen 124's pushed through a traditionally rifled barrel and comp at Major velocities and not lead or smoke. Not Donnies bullets, but we are on the same page with the coating process, he just has 4X the capacity I do.... Yup, shopping for machinery now!