Ed Huntress fired this volley in
:

And several of my gunstocks are coated with hand-rubbed linseed, which
dries in a month or so.

Not if it's PROPERLY "boiled". You must've done them with commercial
'boiled linseed oil', which is not cooked, just prepared with chemical
dryers to eventually sequester all the fats. In the long view, it's
terrible stuff which stays sticky for a LONG time.

Proper old-school cooked, skimmed, strained linseed oil, on exposure to
the oxygen in the air, polymerizes perfectly in about a week. In order
to do that, ALL the fats have to be cooked out and mechanically removed.

And, if you pre-treat the wood with a potassium permanganate solution
(and clean it again) to accelerate the normal slow oxidation process of
the wood's own resins, you'll get a "years old" patina in about two
months.

I've done a whole bunch of that, building period reproduction furniture.

L