Talk about not doing homework?
True Raw Linseed oil is merely oil which has been warmed and allowed to stand to remove the sediments.
Refined Linseed Oil (which is what people actually use as "RLO" has also been treated with acid to expedite the removal of those same impurities. If your RLO has a yellowish/light amber hue to it then it's RLO as in 'refined'.
BLO (which is not really boiled) has been refined similar to RLO (refined) but has the addition of driers to form a thicker barrier once cured.
Stand Oil is a more refined Linseed Oil which as you noted has been heated similar to RAW to thicken. However the choice of driers and thinners are up to the user and his/her choice of application. Most artists do not use driers mixed with their paints as it does not yellow/patina. However house painters and some woodworkers do.
Where the difference in opinions lie is in what's original, what is correct, and what is practical for today.
Originally the rifle stocks were dipped into vats of heated oil then swung off on racks to a climate controlled drying room. We no longer have that luxury of heated vats and drying rooms, especially in our homes. Since old correspondence has surfaced mentioning the use of 'boiled oil' for maintenance, many (such as myself) choose to continue that regimen. Also, since our stocks were originally soaked in "RLO" it's already in there...to an extent at least.
For penetration we dilute our BLO allowing it to wick into the wood fibers. Once it thickens (let's call it..dries) it then begins to give us back that patina we all adore. It also is less likely to "sweat" in our hands and onto our clothes for the next few years when we are shooting in direct sunlight.
Stand oil is something relatively new for surplus collectors. It's said that it 'dries' much slower and doesn't age, since its use is geared more towards art than rifle stocks. If it's diluted and/or has driers added by its user (Jap drier etc.)..I don't know. Mostly because until recently it hasn't been used all that much on our end and....it's been shared by the Purist/RLO crowd as being better than the refined linseed oil. Hence my comment to P246 (not to you) and the little "winking smiley face" that you obviously missed.
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