Creation of IMR powders dates back about two hundred years when the business was initially Started by E.I DuPont. Readily available for use in many reloading purposes, the IMR series of powder is trusted by reloaders all around the world. IMR 4227 Powder in stock now may be the Magnum https://reidopmki.thelateblog.com/28247501/imr-4227-powder