Creation of IMR powders dates back in excess of 200 decades when the company was at first Launched by E.I DuPont. Accessible for use in many reloading apps, the IMR number of powder is trusted by reloaders imr 4227 all around the world.IMR 4227 Powder in stock now will be the Magnum Pistol Powder from the IMR lineup. If it suggests Magnum, 4227 pow