This isn't a rifle story, but a related handgun story.
When I took Gunsite's basic handgun class, we were four days into the class when we had the night shoot. We did some flashlight work and then the instructors had us do something bizarre. We did a drill where we drew our handguns into a good solid Weaver stance. The same stance we had been shooting out of all day for the last four days. We were then instructed to fire a five shot group on the target in the pitch dark (we might have shut our eyes, I don't remember). When everyone was done, the rangemaster said, "Before anyone turns on their light, I am going to tell you that these groups will be the best group you shot all week". And, of course, he was right. The groups were right in the COM and were basically one ragged hole. The alignment was achieved completely from our stance and body index.
