Thank you for your response. I too love shooting in the rain for all the reasons you described. Several years ago we purposly spent many days under an EZ up shooting at distance in everything from a light rain, to a down pour. We were surprised with what we learned and it matches your conclusions. That is, until we let our rifle get wet! Our conclusion is that all is well in the rain, unless our chambers/ barrels get wet. Once moisture was introduced into the chamber, or barrel, the point of impact became unpredictable and erratic pressure signs showed up on on brass. We duplicated this many times to ensure we understood what was happening. I appreciate the information you share and all that you contribute to the long range community.