The 10/17 and 10/22 Magnum were both discontinued for the same reason: they were not sold in quantities enough to justify further production at their chosen price point. In other words, the market had determined a price that could not support production.
Didn't make money for the company
Nobody. The .17 HMR (for Hornady Magnum Rimfire), is a rimfire cartridge, not a center fire cartridge.Anschutz, CZ-USA, Henry, Weatherby, Ruger, Remington, Marlin, Browning, Savage, and Crickett are among the list of manufacturers who manufactures .17HMR rifles, but, as with the cartridge, they are all rimfire rifles.
Ruger's web site has extensive sn data. !981
Marlin and Ruger are two.
Ruger is one.
A call to Ruger will get you the answer.
No, the magazines are not compatible.
The Ruger web site has extensive sn data.
It was manufactured in 1982.
Marlin and Ruger make ones that do
Remington made one can the Remington 17 about 30 years ago.
Go to the Ruger website, Customer Service, Historical Data, find your model, and look up the date of manufacture.