In the late 1920's, Springfield Armory stopped using Logwood Stain, in an economy move. This changed the appearance of the wood on U.S. Military Arms.

Possibly, 'AFJuvat' has a later 1903 Springfield stock in his photo.

FWIW - I had luck getting a good color match with a new walnut forearm that I spliced to a 'cut-down' original Krag stock.

I put a dark walnut stain on the raw walnut wood and quickly followed that with a "Rosewood" stain. It approximated the original wood color.
(Getting the same finish 'sheen', as the original wood, is trickier and a different issue).

I do not know if your original stock can take a 'stain' at this point. There may be 'oils' in the wood that would inhibit the stock from accepting a stain.

Your call. You can test with some stain in a hidden area like the barrel channel.

Attached: 'Before' and 'After' Staining a replacement forearm.

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