Item Overview: IMR 4227 PowderCreation of IMR powders dates back again in excess of 200 many years when the company was at first Started by E.I DuPont. Accessible for use in many reloading apps, the IMR series of powder is dependable by reloaders all across the globe.IMR 4227 Powder in inventory now would be the Magnum Pistol Powder inside the IMR