The chambering will be stamped into the barrel next to or under the Winchester name.
Model 1890's all had .22 caliber barrels, but they could be chambered in short, long, and long rifle (LR).
You might even find one in .22 WRF (The fore runner of .22 magnum.)
If there is no chambering stamped in the barrel, or it only says .22, it's chambered for the .22 short.
The reason being that it was made before .22 longs and LRs were commercially available.
take it to a gunsmith
All Winchester model 12's are take-down designs. Winchester made a model 25 which is solid frame and very similar to the model 12.
don't take down a Winchester model 52, the way they bedded the rifle was a mystery. It may never shoot the same if you take it apart.
You need a manual. Contact Winchester or find a gunsmith and ask for help.
To find out the value of a Winchester Model 8422, take it to a local gun dealer. They will be able to examine it and determine a value for you.
take it to a gunsmith
Of the 20,580 Model 55 Rifles that were manufactured, appoximately 81% (or 16670) were Take Downs. The Solid Frame Model 55 is the rarest Winchester model configuration ever made. If you can provide me with the serial number and caliber, I can tell you whne it was made, and the overall statistical numbers.
Best left to a trained gunsmith.
To find your Winchester model 1897 serial number you need to look on the gun. You also can take it to a local gun dealer who can help find the number.
You should be able to find a assembly-disassembly guide for your Winchester model 37 on E-bay.If not you may to need to visit a qualified gunsmith.
Best left to a factory trained gunsmith
32 caliber... "32 W.S." is the designation for the 32 caliber Winchester Special cartridge.