I'm glad I asked - I wasn't aware of bullet setback - but a quick google search took care of that. I don't have a safe, so I won't leave my weapon unattended with a round chambered. I can still get to it in the unlikely event of an invasion, but high up on the bookshelf it can not be seen or reached by my son...yet. A safe is in the cards, but being unemployed right now doesn't make it feasible. Also, the gun is a S&W Sigma .40.