Was none of that useful? I did a lot of blabbering, I confess.
Short synopsis:
1) Distressing is OUT. Almost nobody distresses stocks in the sense that people distress furniture.
2) If you want that "gunk in the crannies" look, the flat black paint method looks better than it sounds. Spray the finished gun completely then rub it off everywhere except the crannies.
3) If you want that "worn on the high spots" look, just stain the stock dark then rub it out in these areas with 4-O steel wool or pumice: cheekpiece edge, fore end where the gun would rub on a rest, across the wrist, face side of the comb, is easy to achieve.
4) We can argue all we want about how a gun "woulda looked" but few choose to fake the look of a gun that has been used hard for 5 years, such as might happen in a war or for a professional hunter. Dried out and dull is that look.