Not sure how many of you are aware of that, but the soviets used Creosote as the primary wood preservative; shellac is only the top coat.
Creosote is easily identifiable by it's specific odour; take the action out of the stock, or the butt plate and you can smell it.
Creosote is primarily a coal or petroleum residue distillate and it is an excellent wood preservative; railroad ties, telegraph poles they are all treated with it and they never rot.
It is an excellent preservative but environmentally unfriendly and apparently carcinogenic.
More about creosote here:
http://www.hc-sc.gc.ca/ewh-semt/pubs/contaminants/psl1-lsp1/creosote/creosote_synopsis-eng.php
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