I've redone several. Lots of different ways, some better than others. I'd second second using a chemical stripper. Best advice is don't get in a hurry. Don't try to get it finished over a weekend.

My best results came from dipping 1" squares of sand paper into oil (I've used tru, dutch, lindseed, boiled lindseed, and various combinations thereof) and making small circles the length of the stock. The theory being, eventually the pours of the wood will fill in with the slurry made by sanding. I start with 150 grit and make my way to at least 400. I normally did one pass then let the stock dry a day or two before hitting it again. I wipe off the excess slurry before letting it dry, some don't.

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=370&page=1

More than you ever wanted to know about finishing a stock.