I had a 45 caliber semi-custom long rifle. I think it was a KY Hunter style(but not sure). I loaned it to a friend to hunt with one year. He brought the rifle back, and it went into my safe. The following year he did not borrow it, but the next year he did borrow it again. So the rifle sat in my safe for almost two years without being fired. We were getting ready to go hunting so I told him to go out on his porch and dry fire a couple of caps. He picked up the caps and headed out the door. But instead of going outside he aimed the rifle out his living room picture window, and fired the cap. The rifle went off. He did not unload and clean the rifle from two years earlier. I went a little nutty on him, but then I let up pretty fast. After all he just blowed out his living room picture window. If you keep them dry they will fire. Tom.