This is a custom Winchester 22 SHORT outside magazine tube, it has the loading port profile of the 22 short cartridge. You can ONLY use short bullets in this tube. This was the tube originally used in the shooting gallery guns along with the triangle loading port, and were special order to customers who had 22 rifles with the SHORT carrier. The tube also has three pins notches at different locations on the outside, so the models it will fit are the 1890, 1906, 61, 62, 62A. The loading port is in the same location as the model 62.
