The bag thing works in the summertime and usually for cosmoline. I'd steam then bleach the wood then re-stain with spirit based stain to my liking then use BLO
anyway. If your not up to a complete refinish I"d leave it alone because there's no easy way to do it.
Why do you say BLO? real glossy?. I could show two rifles, one with a 75yr finish and one I did two months ago with BLO and you'd be hard pressed to tell the difference.
Whatever finish you have if it's too glossy take 0000 steel wool and rub it down. For the rifles sake I hope your not dealing with the dreaded Bubba Goo!!!!...![]()