My friend Dave recently became the range safety officer at my local wildlife area. Every Sunday evening, he stops by my house after work. I give him a beer, and he gives me a five gallon bucket filled with all the empty hulls he picks up at the range over the weekend. It is a sweet deal. I sort through the bucket, keep the reloadable hulls and toss the rest in the trash. In the last bucket he brought me, I found about 20 unfired buckshot loads. Every primer was dented, but not one had gone off. Out of curiosity, I tried them in my gun, to see if a weak hammer spring was to blame. They didn't fire. Perhaps they had gotten very wet, or been stored improperly. Or, maybe they were just bad shells, loaded with a batch of dud primers. It happens.