Just saw an old episode of Cheyenne with Clint Walker. A traveling salesman was promoting the "new' S&W 44 or 45 revolver with metallic cartridges. Didn't get a good look at his wares, he was killed within 10 minutes of the show. Wonder what he was selling? Most of those shows were supposed to be 1870's and later. Any clues? Perhaps a top break?