I work in a gun store. Once in a while a guy will ask my recommendation on how much smokeless powder can they use in a muzzleloader. I always tell them none. I have been scoffed at for that answer. One fellow told me he had done it multiple times. I told him to keep his personal affairs in order. ----- Another guy purchased a 50 caliber, percussion, Thompson Center, Pennsylvania Match rifle from us. (The gun was mine that I had placed on consignment.) After a week he brought it back and complained that he could not get it to fire. The store owner refunded his money and told me about it the next time I came to work. I examined the gun and found nothing wrong with it. When I got a chance to talk to the customer, I learned that he had been properly loading the gun, but he had never placed a percussion cap on the nipple. After every failed attempt to fire he had properly pulled the ball, cleaned and reloaded the gun, only to have it "fail" again. I resold the gun to a better knowledgeable customer.