There are at least 2 different types of air rifles which may have been used by L&C. This issue has been and still is discussed by gun collectors. I think this video is way off. There is mention of the air tank being repaired during the trip. The gun most often credited had a round air tank suspended under the forearm. As for use it is mentioned that a goose was shot during the trip with the air gun. The Expediton went down the Ohio River to Clarks Plantation[Present day Clarksville Indiana] before heading west. During one of the many stops along the river they displayed the air rifle. It was at one of these stops that the gun was fatal to a human being. A woman was accidently shot and killed during a Demo of the air gun. I doubt very much that the early[Red Ryder] had that much to do with the L&C expedition.