Production of IMR powders dates back about two hundred decades when the company was at first Launched by E.I DuPont. Accessible for use in many reloading purposes, the IMR series of powder is trusted by reloaders all around the world. IMR 4227 Powder in inventory now could be the Magnum https://imr4227loaddata14457.ampedpages.com/imr-4227-powder-55250051