Not sure how to put this tactfully, but I believe you have an intentionally faked "carbine", deliberately made to deceive - I hope you did not pay a great deal for it. That barrel is not original to that receiver, nor does that number date to 1899. The cartouche does not look "right", nor do the grasping grooves. If the barrel (bore) is good, I'd sell it as shooter; it sure is pretty, but I'm nearly certain it isn't "real".