IMR 4198 is a fast-burning rifle powder that gives outstanding performance in cartridges like the 222 Remington, 221 Fireball, 45-70, and 450 Marlin.

IMR Blue is a new IMR family of powders with comparable burn speeds to competitor powders. This new IMR family uses modern technology to ensure the product is "green," burns clean, and, in most cases, results in more energy from each grain of powder. IMR powders are consistent in bulk density from lot to lot, eliminating some of the variability inherent in other competitors.