If you could somehow post a picture that would probably really help. What about some more specifics on the gun itself. Is it a tube fed, magazine fed? Anything on the buttplate?
Anyways, here at work, completely bored and armed with a Numrich Catalog, I might have found some info, at least something to investigate. I see that Savage made several pump action .22's (gallery guns), the Model 1903, 1906 and a 1909. Not sure if that references the year originally produced or if the various models are for 22LR, 22 Long or 22 Short?
Winchester made a Model 1890, 1906, Model 61, Model 62A Not sure of years of production.(?)
Maybe you could do a search for some pictures of these models and compare them to your friends gun.
It's not much given the limited resources I have, but it's a start!
Hopefully someone else will chime in to give you some more info. Good luck in your search and let us know what you discover!