Mr. Smith is correct. Most S&Ws come from the factory now with drag lines. I surmise the assemblers aren't as careful as in years past. One of the few S&Ws I've bought without a drag line was a Model 686 CS-1. I carried and shot this gun for years and it never showed a drag line. An old Smith dealer once showed me how to avoid the drag line. Normal cycling with a properly times Smith won't cause a line. It's usually from opening and closing the cylinder , then turning the cylinder to index it. This gentleman showed me how to index the cylinder while closing, and after doing so for many years it has become second nature. Still no drag line on my CS-1 so this works.