I don't know about furniture stripper. Try it, but I think the stocks were done in polyurethane. 1850 might only soften it - the gel would be better. In theory that clear coat should just wipe off after the gel eats away at it. It'll take multiple applications, and you'll still be sanding the stubborn spots.
Steam out the dents, condition and stain (if you want to), then hand rub with tung oil. I've used a 90/10 Tung/Pure Beeswax mix with great success on old gun stocks and knife handles. Warm it up (carefully) to blend then work it in to the grain ... buff and repeat a few times.
I'd advise that you avoid Tru-Oil. It can be okay, but there are way better choices like Tung, Walnut, Boiled Linseed, etc oils.
And, very importantly, don't buy your Tung/Linseed/etc. oil at the big box stores. That plastic bottle stuff they sell is junk. Go to a specialty paint and stain store or hit the Lee Valley, etc.
Some of those post-64s used birch - a lot of them did actually. If you have birch consider a water-based stain as they don't take oil stains so well.
Good luck and have fun.