M1 production started with raw linseed oil, but was deemed unsatisfactory because it smoked when the barrel heated up.
Pure tung was used through out M1 production because it was water proof and when heated it totally penetrated the wood.
BLO was never used on M1 stocks during the total production run.
Virtually 100% incorrect...
BLO and tug have virtually identical characteristics... tung was/is cheaper because it has no food value because many people are allergic to it.
It absolutely is not close to waterproof and in point of fact wood finished with either BLO or tung will absorb water faster than bare wood.
Your final sentence contradicts your first sentence...
