Manufacture of IMR powders dates again around 200 years when the corporation was originally Launched by E.I DuPont. Available for use in lots of reloading apps, the IMR series of powder is reliable by reloaders all around the world.IMR 4227 imr 4227 Powder in inventory now may be the Magnum Pistol Powder in the imr 4227 IMR lineup. If it says Magnu… Read More