These were not high dollar guns, but fairly well made. Value is around $150-$175.
Yes, if you have the 22 Magnum cylinder. It uses both.
10-100
A .357 Magnum revolver can, as it uses cylinders and does not require headspacing between a cartridge and a chamber. Semi automatic, lever action, etc. .357 Magnum firearms which use a headspaced chamber cannot, however.
50-125
it should takeboth a 22 cal. long rifle and a 22 magnum cyl.
About $150 if its in GREAT condition and has both the cylinders .22 and .22 magnum.
There are revolvers made with 2 cylinders that can switch back and forth between LR and Magnum ammo. However, those have a barrel bored to magnum specs. Simply adding a magnum cylinder to a 22 LR is not safe.
Not sure what an HW3 is, but if it is a firearm chambered for .22 Long Rifle, no, it cannot be "rechambered" to .22 Magnum. The .22 magnum fires a larger diameter bullet than the LR, and has higher pressures. The two cartridges do not interchange except in a few revolvers that have 2 cylinders- one LR, one magnum.
It implies that the cartridge is more powerful, but it means that the cartridge has "magnum" in its' name. It is more of a marketing tool than a factual one. A magnum cartridge is one where the case has been elongated to provide more room for powder, thus more power. The diameter of the bullett will be the same, or close enough, but the extra length increases the combustion. Usually, the cases have thicker walls to control the higher pressure explosion. Also, the cylinders and barrels of the corresponding weapon may me beefed up also to handle the added pressure and velocity.
50-126
Try want ad, for sale as, pawn shop, gun shop, gun show, on line auctions.
Smith & Wesson did not make the Double-Nine. High Standard did, and it was available with two cylinders. One was a .22LR cylinder the other was chambered in .22 Magnum. sales@countrygunsmith.net