I have had some wonderful bird hunts in the rain and I don't just mean sprinkles and light rain. Am older and smarter now, though. Wife and I hunted one day when the sleet was freezing to the gun barrels and, when the gun was fired, there was apparently enough barrel flex to totally blow all the ice off. To get to the point of the original question.......these guns were all dried very well and appropriately cleaned and lubed afterwards. No ill effects ever noticed. I will hunt with whatever gun I have in whatever conditions show up. But I do not plan on hunting in rain (more than sprinkles/light rain) anymore. Just too old. My shotguns would be considered very expensive to some......and very inexpensive to others. My thought is that if the gun is properly prepped before with waxing, lubing, etc. and will be taken care off after exposure........use it if you want.