I passed thru a pawn shop today and found a .25 Cal. older Ruger (3 screw) Single Six. The 22 cal stamp on the frame had been "runnin' ironed" out to read .25. Cylinder had definitely been re-bored and seemed to fit a .22 Hornet case as far as head and rim diameter but obviously the Single-Six cyl. is not long enough for the Hornet case. Actually it is I guess as the case reached right even with the chamber mouths but the bullet stuck out. Anyone know what this might be?? I will get to my reloading room and check the Ackley books I guess. It does seem to be some kind of wildcat based on the 22 Hornet case and trimmed short enough to work in the Single Six. I really got the shop owner confused because he told me it was re-chambered for 25-20 and I told him that was impossible and then proved it to him as I had a 32-20 in my pocket. Anyway, I may or may not be interested in this thing, but I prefer not to purchase until I know what it is. Any help is appreciated and I thank you all in advance. JW