Manufacture of IMR powders dates again about 200 yrs when the organization was at first founded by E.I DuPont. Accessible for use in several reloading applications, the IMR series of powder is reliable by reloaders all around the world.
IMR 4227 Powder in inventory now may be the Magnum Pistol Powder during the IMR lineup. If it says Magnum, 4227 powder would be the imr 4227 load data option for true magnum velocities and functionality. In rifles this powder provides excellent velocity and accuracy in this sort of cartridges as being imr 4227 the 22 Hornet and 221 Fireball.