I tend not to wipe a bore out if I've fired one or two shots and know I am going to take the same rifle out next week. I tend to carry the same rifle 5 or 6 times before grabbing something else. But I give it a clean once I know I won't use it again for a while. It's a pretty dry place where I live though.
But if I lived in a climate with high humidity (like Queensland in north Australia) I would oil it every trip. Last year I purchased a Ruger Ultralight in .257 Roberts that was in 99.9% condition from a website. When I got it I couldn't believe how good it was. But at the range it shot 3 - 4 inch groups and my gun smith's bore scope showed erosion in patches along the entire barrel. He reckons it was packed away unoiled after use and the powder attracted moisture. I had to rebarrel the rifle which was a real shame. And I bought it from Queensland with very high humidity.
