Maybe mix up a tiny quantity of orange shellac and apply it with a French polish technique? When it's dry, maybe a french polish with the same shellac over the entire stock to further blend the color? Just thinking out loud here. Kind of surprised to hear of shellac being used as a gun stock finish. Don't spill any of your Martini (the drink, not the rifle Joe) on it!
Was shellac a common finish used in the pre-war era amongst stockmakers? I've used it as such myself, but only as a base coat for the varnish that followed it.
