How do you determine the caliber of a Winchester model 1892?

The caliber should be marked on the barrel of the rifle(32wcf,38wcf,44wcf)etc.There is another way to be sure,and that would be to have a gunsmith make a casting of your chamber using cerrosafe.This will allow the gunsmith to measure the chamber after the casting hardens,and is removed and determine for sure the correct caliber of your Winchester model 1892 rifle/carbine.