Merchandise Overview: IMR 4227 PowderManufacture of IMR powders dates back again over 200 several years when the company was initially Launched by E.I DuPont. Obtainable for use in several reloading purposes, the IMR number of powder is reliable by reloaders all around the world.IMR 4227 Powder in stock now would be the Magnum Pistol Powder from th