I got to take the forearm off, and took the rifle down today. 1082 was the number on the barrel, so made in 1933. There were interrupted threads in the receiver, but like I said above, not on the barrel shank. It's simply a 1910 made Winchester takedown with Niedner heavy barrel made 3 years after the first Hornet ammunition became available. We cleaned the dust out of the barrel and shot a couple rounds of PPU 22 Hornet. Brass didn't blow out to any sort of improved configuration. Windage is way off, it needs boresighted. That's for another day, it was cold and windy. The barrel looked to be in great shape internally.  This rifle was handed down to the lady mentioned above.  Her grandpa must've been a mine boss or landowner, most the folks around here could only afford H&Rs, Iver-Johnsons, or Stevens.