Been there buddy. I once did the same thing with a rifle forgetting to put a bullet in it. Wasn't much older than you then. The biggest buck I had ever seen in the woods at that time and the gun just clicked. Should of seen the speed at which I put a bullet in the gun only to watch the deer run off. I could of cried. I never forgot to do that again, and I bet you wont forget to stick a primer on there from now on. You ll laugh about it before long.