Creation of IMR powders dates back over 200 yrs when the organization was initially Established by E.I DuPont. Available for use in many reloading programs, the IMR series of powder is reliable by reloaders all around the world. IMR 4227 Powder in inventory now is the Magnum Pistol Powder inside https://gunnerbdbxs.blogtov.com/8224476/imr-4227-powder