Yes, I have tried to set one up. The hold sensitiviy makes it impossible to shoot well, and this coming from someone who usually shoots springers. If you dial down the power and use a smaller transfer port, it will get over 90 shots withing a 20 fps spread from a 2400 psi fill. That sounds promising. The problem is the zero wanders through that string. You may get good 3 shot groups from a bench. But shoot one 50 shot group from a field position, and it will tell a different story. I put a mad dog stock on it, experimented with floating the tank vs attaching it to the stock....it was just an excercise in frustration.
There are a lot of cheaper options that will work better out of the box.