Hello, I recently detail stripped my Savage Model 72 falling block single shot rifle to replace a firing pin and have a scope mounted. I have a question about the lubrication needed for re-assembly. From a survivalists perspective, (In other words, not being able to detail strip it again for a long time) what would be the longest-lasting and best lube to use for re-assembly? Please understand that I am in a dusty desert condition, so fine dust is ever-present, although I am not sure what bearing this would have, if any, on the lubrication used. I am sort of debating whether synthetic grease would be OK, or perhaps Lucas oil? I am unsure. Thanks for any suggestions.