Interesting. I have been using BLO on my hammer handles for years. Lyman recommends applying BLO or Birchwood Casey Tru-oil to their Trade Gun stocks too. In fact, if applied to a hot piece of iron, it will caramelize and leave a very nice shiny finish that is very weather resistant. But while I have heard of putting pine tar on baseball bat handles, I have never heard of it applied to firearm stocks. I assume it is not sticky? How often do you renew it?