1. You can get a cody letter. It will tell you when it left the warehouse and what options it had on it originally. It won't tell you where it was sold or who it was ordered by. They are cool, but only really useful if you are trying to verify a rare option or possibly military provenance(not sure on that actually).
2. If it is in good working order it can shoot plain old factory ammo in it. Winchester rifles do not require blackpowder like old colts do or so I have always been told.