Creation of IMR powders dates back about two hundred decades when the company was at first founded by E.I DuPont. Accessible for use in several reloading applications, the IMR number of powder is reliable by reloaders all around the world. IMR 4227 Powder in inventory now would be the Magnum https://imr422759251.madmouseblog.com/8208918/imr-4227-powder