I've fired .38 Supers out of a Ruger Speed Six to.
Extraction was the only problem in that the rim of the super round is a bit little.
I'd love to see a 640-1 set up for .38 Super and ring clips.
I suspect only a little facing off of the cylinder and a special moon clip would be all that is needed.
"The government has confiscated all of our rights and is selling them back to us in the form of permits."