Manufacture of IMR powders dates back more than two hundred years when the corporation was at first founded by E.I DuPont. Readily available for use in lots of reloading programs, the IMR series of powder is trusted by reloaders all across the globe.
IMR 4227 Powder in inventory now is the imr 4227 load data Magnum Pistol Powder inside the IMR lineup. If it states Magnum, 4227 powder would be the choice for real magnum velocities and general performance. In rifles imr 4227 this powder provides fantastic velocity and accuracy in these kinds of cartridges since the 22 Hornet and 221 Fireball.