Rossi (Think what you have is a Rossi 92) does not provide instructions on disassembly, and in the owners manual, specifically cautions NOT to attempt it. On that note, I am going to need to refer you to a gunsmith. They CAN be cleaned without taking them down- and spray cleaners like Gunscrubber can do a decent job of flushing gunk out of the action.
100-300 USD
$300-$400, depending on condition.
100-300 USD
marauder.homestead.com
Best left to a trained gunsmith
You really should leave this to a trained gunsmith.
100-300 USD
44
No, you cannot. The .38 Special can be fired out of .357 Magnum revolver (but not automatics or lever action rifles), however.
You can download a manual here - http://www.henryrepeating.com/freestuff.cfm
yes.The Winchester model 9422M was chambered in .22WMR.
Yes.