Now, let's talk about real life situations....I've been in some wet muzzleloader seasons but nothing that ever compared to soaking a cap in water. So, that seems more like hype than anything else. Also, read more about accuracy of #11 caps and small rifle primers versus the 209 primers. I still use a #11 primer in a knight wolverine and won't change to a 209 simply because my primers always have worked. Think about it, once the primer is on the nipple, what are the chances of the darn thing actually getting water in it? Slim and none. It fits pretty tight on the nipple and the water would have to fight like hell to get under it. Now, I've had water get down the barrel and get the powder wet, MY FAULT!!!, I should have put a finger cot or saran wrap over the end of the barrel to stop the water. But, it was no fault of the primer. Just my thoughts. If you want to hunt submerged, go with the 209 I guess. Good luck.