Manufacture of IMR powders dates back more than 200 yrs when the corporate was originally founded by E.I DuPont. Accessible for use in many reloading programs, the IMR series of powder is trusted by reloaders all around the world. IMR 4227 Powder in stock now will be the Magnum Pistol https://imr4227loaddata14680.amoblog.com/imr-4227-powder-49585900