+1 Boiled linseed oil. Or pure tung oil.
And then again maybe not either or, but both and...
I came across some very old linseed oil that went gummy after years which I refreshed with 75% tung and got very pleasing results. This blend of oil was used on a 1899 that was covered in some stuff that left it tacky to touch and very dirty.
My only regret was not adding something to stain the blend of oils a little more red so that the final product looked more like the 1895 finish.
The results can be compared to an 1895 varnish and a 1904 Winchester oil finish in this image: