Back in the 70's there was a gunsmith named John Towle. He owned a company named TNT Arms in North Conway, NH. He made all of this stuff on Wichita actions. I has him do some custom work for me on a Model 15, and when I went to pick it up I saw some of them. As I recall one was 7mm Rem. Mag, and another was 458 Win. Mag( full size). I remember the day I picked it up, I saw his wrist swollen the size of a hardball from competing using his own creations. I still have the Model 15. Smoothest action I have ever experienced. I have never tried to sell it. Not much demand for a Frankengun.