Don't use steel wool. Use bronze wool and kroil, it will not harm the bluing.
You may be correct, I got them off ebay but they were better than the new rubber Pachmayr grips that were on it to my mind. I will be looking for a set of vintage grips.Those stocks, IMOP, are not vintage but reproductions.
I've used 0000 steel wool and oil for years too and it works just fine. I go slowly and check progress often so I don't hurt the finish.I've used 0000 steel wool soaked in oil for 30 years . No apparent scratches . Just saying it works for me .