It's the second shell..not the first.Always slam the bolt. Either use bolt release or pull bolt back and let it snap the shell in. I fell once and butt hit the ground hard and jarred bolt loose which cause my next shot to click. Also when I walk through thick weeds or small trees I reset the bolt when I get out to ensure it didn’t get caught during the trek. In my mind I’ve told myself if I ever hear the dreaded click again that I’m not gonna stare at my gun like what just happened but pull the bolt back and advance another shell then shoot the bird. It works in my head