Creation of IMR powders dates back around 200 yrs when the corporation was initially founded by E.I DuPont. Readily available for use in several reloading programs, the IMR number of powder is trustworthy by reloaders all around the world. IMR 4227 Powder in inventory now could be the Magnum Pistol https://imr422715444.thezenweb.com/imr-4227-powder-65589849