I have been using BLO cut 50/50 with turpentine, man it smells so don't do it in the house. wipe it on rub it in good, wipe it off after 20 minutes and rub with a soft cloth until you have your desired shine. I find two to three gives a good dull but protected finish. Same thing with tung oil I wipe it off and do it in layers and can get the same dull military finish. Tung oil does stays hard even in hot temperatures but doing the BLO properly should not cause you any issues and was standard for common wealth rifles! They look the same to me when done dull and slowly.