Manufacture of IMR powders dates back again over 200 yrs when the company was originally Started by E.I DuPont. Accessible for use in lots of reloading apps, the IMR number of powder is dependable by reloaders all around the world. IMR 4227 Powder in inventory now is the Magnum Pistol https://imr-4227-load-data68038.tribunablog.com/imr-4227-powder-42062337