I dont unload every day while hunting from camp, But I always unload and clean no matter what when I get home. I cant remember ever having a prob with wet powder hunting in any conditions, but my primmers got wet once and that screwed me out of a shot on a buck. I would imagine hunting with a inline would be very easy to empty out at the end of the day, I just use my air compreser to pop out the slug and then dump the powder at home.