In the past I have used a scraper and then household bleach on beech stocks. This gets the wood back to a nice white base ready to accept a stain. I then use linseed oil over a course of a month.
You do have to be careful of even coverage of the stain though.
There’s a good vid on YouTube demonstrating this from a member on here.
Deejayuu-looks really smart-was that Danish oil or something else?
Cheers
Steyr Evo 10, Anschutz 8001, BSA Scorpion SE, BSA light Pattern, HW77k, HW30s, AA TX200, HW45 Blackstar, HW40, Walther CP88, Webley Premier E, TBC!
Alkanet and CCL. Must admit wish I'd done a bit darker and maybe stuck with Linseed which I like a lot.