Don't use alcohol on any stock finish applied originally before the late 1960's. [a very general rule!] It will usually have some alcohol affected elements/ingredients that are removed, softened, or matted, by alcohol. If you must, test on some hidden area such as under the metal. If there is no finish applied under the metal, a favorite test area of mine is the corner where the wood tucks in behind the rear receiver ring and the tang meet. I use a single q tip touch there and can usually tell if the finish is affected right away, yet if it is, it is invisible once REN WAX IS APPLIED. Hope this Helps. Happy Holiday to all and May GOD BLESS! Jerry