Product or service Overview: IMR 4227 PowderCreation of IMR powders dates back again above 200 years when the corporation was initially founded by E.I DuPont. Obtainable for use in lots of reloading applications, the IMR series of powder is trusted by reloaders all around the world.IMR 4227 Powder in stock now could be the Magnum Pistol Powder insi