Wow!
To paraphrase Reagan... it isn't that you are ignorant; it is all you know that just isn't so.
The BLO you find in a can at the hardware store is NOT the same stuff you will find in Tru-Oil.
Linspeed DOES NOT contain BLO.
Sako DOES NOT use BLO on their stocks.
You do not have a clue what you are saying... "They just add more driers so it will polymerize into more of a varnish. This increases the finish durability immensely." That is a classic case where you cluelessness has been made.
One of my favorite 24hr lines of all time "You should be asking advice, not giving it!"
