I did that one time unwittingly to myself. I was practicing with my .375 Wby at an outdoor range for an upcoming Alaskan hunt. I was shooting it pretty well, but I couldn’t tell for sure if I was flinching at all or not. I loaded it with four down and an empty chamber to practice with the action that way because most AK guides make you hunt that way. The friendly guy in the next booth started talking to me about what anti-tank weapon I was shooting for a bit. When we were done talking, I returned to continue shooting--forgetting that I hadn’t chambered a round. When it went click, I was still staring motionless with my cross-hairs still on the bullseye. So. then I knew.
