When you load your hunting load, tape over the barrel. (no water in from the muzzle end)
Then, I always protect the nipple end.
* When leaving on a hunt, I "paint" the cap on with clear nail polish.
* When not capped, I push a round toothpick down there nice and snug.
(Again, it's all about keeping the powder dry.)
you can hunt in any kind of weather if you keep your powder dry...... You can also screw up the best opportunities if you don't......