I have a Model 12 handed down to me from my grandfather. Takedown rimfire rifles were very popular in the first half of the 20th century, with many sportsmen traveling by train, the ability to descretely stowe a rifle was a sought-after feature.
A very common fault with the Model 12 is that the cambers tend to blow out. They become elongated over time and then the action becomes hard to cycle as the spent case expands and wedges more tightly into the mis-formed chamber. After a while the chamber will become so deformed that the pin will break upon extraction.
I'm afraid many of these fine little rifles were probably discarded after this happened, so good examples can be hard to find. My rifle had to be have the chamber refinished back in the 1970s after 50 years of steady use and I would hope that's the route most would go with these fine little rifles.
Tack-driving accuracy is really not the point with these fine little rifles and it never was. The sportsman of the early 20th century wanted three things: The ability to dispatch pests, shoot a few targets, and bag whatever presented itself on the trail to provide meat for the hunting or fishing camp. The view of the .22 back then was that it was a weapon of feet, not yards. If you couldn't hit something from where you stood, you didn't blame the rifle, you simply got closer until you could hit it.
Grouse