I've been doing this professionally for 40 years so I'll stick to my own methods. I don't care how many coats of BLO you use, the water is still going to go right through it. But if that suits you, I recommend you do it that way.
Absolutely right. Modern BLO barely waves as water or water vapor goes through it, in or out.
The idea is to protect both wood And metal, Nu.
Would you say that most military powers used Linseed on stocks just for the fun of it, Nu?
all the best,
Richard.
Hi Richard,
I've been studying U.S. military finishes for wood stocks for many years, as an active duty Armorer and NM armorer and as a collector. BLO of the 18th and 19th centuries was very much different than what we buy in the paint section of the hardware store today.
As of the late 1997 when I retired, the Table of Authorized Materials (TAM) for wood stocked rifles and shotguns STILL only allowed BLO or Raw Linseed Oil as the only authorized finishes that units could procure and use on these arms. I cringed mightily every time I read this in the TAM's for wood stocked arms, as they never explained WHY it was done. Even though I've read mounds of U.S. manuals and technical information (including from the Military Armories of all time periods) there are only hints of why it was done. So I can't document my conclusions on the reasons it was done by pointing to any military source directly.
Having written that, there were two reasons the US Military used BLO and Raw Linseed Oil (RLO) on wood stocked arms. It WAS to protect the stocks, but not in the way most of us think. It was NOT to keep water or water vapor out of the stocks, because BLO and RLO can't do that.
Here are the two reasons:
1. The primary reason was to keep the stock from drying out too much and checking or cracking during the service life of the wood stock. Wood stocks eventually wore out and got loose from recoil and had to be replaced, but BLO and RLO kept them from drying out and checking/cracking until that happened.
2. BLO and RLO also made it easier to clean the stock from dust, sand and dirt/mud because the two oils acted as a barrier to those things. However, BLO and RLO do not act as much of a barrier at all from too much oil or grease used to protect and lubricate the arms. Even a military stock with many coats of BLO and RLO, won't protect from getting an oil or grease saturated stock that ends up soft and easily worn out from recoil.
Gus