I had one, appeared unfired, absolutely horrendous accuracy which I attribute to what may have been the sloppiest barrel bushing fit ever known to man.
It felt great, shot very softly being so heavy and all.
I didn't feel like going to the trouble of having a custom bushing made up and fit and didn't want to screw with another stock one so I sold it. I was kind of bummed because I love the feel of a Model 39 grip frame.