Production of IMR powders dates back over two hundred many years when the corporate was at first Launched by E.I DuPont. Accessible for use in lots of reloading programs, the IMR series of powder is trusted by reloaders all across the globe.IMR 4227 Powder in stock now will be the Magnum Pistol Powder in the IMR lineup. If it claims Magnum, 4227 po