Drifting into centerfire bolt actions: I noticed my uncle, after unloading his bolt-action, stick a pinky finger into the chamber. "How come?" I asked.
He explained that years before, my father had unloaded a Model 70 in .257 Roberts, closed the bolt and pulled the trigger.
It was very loud in the bedroom. High db in a closed space is painful.
So, that pinky-finger habit has stayed with me through many decades. Yeah, it may look empty, but insurance is a Good Thing.
You're from BATFE? Come right in! I use all your fine products!