Item Overview: IMR 4227 PowderManufacture of IMR powders dates back over two hundred a long time when the organization was at first Launched by E.I DuPont. Readily available for use in many reloading apps, the IMR series of powder is trustworthy by reloaders all around the world.IMR 4227 Powder in inventory now may be the Magnum Pistol Powder while