I guess I was not plain enough. I often shoot all day and we have a loading bench away from the firing line when some of the kids and grand kids are there there is somebody loading all the time , now every time I had this problem it was with a freshly opened can of powder we had been shooting from in the some with 90 + on both temperature and humidity. One thing is for sure I like to hunt and if I can not depend on something like a gun or a powder I do not use it. We are waiting right now for the hogs to migrate back through and if I am healed up enough to go I will hunt them when they come back through. I think we who hunt something thats liable to fight back need to be very aware of what is reliable. A fellow got mauled by a wounded bear near here a couple years ago. and he was using a high powered rifle.