I have never, ever, stripped a gun, rifle or shotgun, to clean and dry it, after it has had a tough trip.
I have basically the same view on this as Sheephunter.
My extended trips have usually been on foot, days at a time, or sometimes with horses. There has been times when my poor rifle has ben soaking wet for the entire time. I used to take a light pull through, a small container of Hoppe's #9 and a tiny vial of oil, wrapped up in a small cloth. If a rifle had been soaked, I may have tried to dry it a bit by the fire at night, maybe wipe it down and use the pull through in the barrel.
People who are familiar with my guns know there will not be a speck of rust on any of them, though I have owned one rifle since 1949 and used it extensively in some of the worst weather the mountains of BC can dish out while hunting.