Item Overview: IMR 4227 PowderCreation of IMR powders dates again around two hundred yrs when the corporation was initially Started by E.I DuPont. Available for use in several reloading apps, the IMR series of powder is dependable by reloaders all around the world.IMR 4227 Powder in stock now is the Magnum Pistol Powder in the IMR lineup. If it sug