Just an aside; when you use oven cleaner, you have to have a good bathtub or sink also to scrub and rinse the wood. Also, use protective gloves. Spray the cleaner on, use a soft bristle scrub brush on the stock to remove the old finish and the cosmoline, then thoroughly rinse the stock off until all of the oven cleaner is gone. Make sure you have removed ALL metal parts before you apply oven cleaner. Once done and dried, use "0" or "00" steel wool to take the raised grain down. If you want, you can apply a stain to bring back the original color and then oil and seal the wood. I use boiled linseed, while others prefer tung oil.