For scuffs try 0000 steel wool lightly rub until scuff if gone. Then hit whole rifle with it. Will be just a small degree shinier than stock, not noticeable. For bad scuffs start with 000 sw then finish with 0000. Be careful with the 000 not to take away to much material.
If the wood is dented under scuff try placing a damp rag over the spot then placing an iron on top.
For scratches that removed finish try the little stain pens in appropriate color then use sw all over rifle to blend.