I recently had a converstaion with a reputable gunsmith about what are the best lubricants and preservatives to use on rifles in wet weather hunts like so many of us experience here in Alaska. We talked back and forth about what our opinions were on what was best. I have been using Break Free CLP for some time and have had good results with it. He was for some of the more Synthetic oils such as Tri-Flow. I did some research and discussed this topic on another forum. Here is a link that a guy provided to a test that was performed with many of the products that many of us have used on our guns before hunts and thought you guys might find this interesting as to how well they actually perform in an equally controlled testing environment. This topic comes up pretty regularly on this forum on whats best to prevent rust on our guns on wet weather hunts like Coastal Bear hunts, Sheep and Goat hunting and even float hunts, so check out this article.
I have to admit that I have tried the Birchwood & Casey Sheath and found it didn't perform so well.