Manufacture of IMR powders dates back over 200 years when the company was originally Started by E.I DuPont. Readily available for use in many reloading applications, the IMR series of powder is reliable by reloaders all around the world. IMR 4227 Powder in stock now will be the Magnum Pistol https://waylonponki.therainblog.com/27231482/imr-4227-powder