IMR 4831 has a slightly slower burn rate speed than IMR 4350. It provides top velocities and performance with heavier bullets in medium-sized magnums.

IMR recommends always consulting www.IMRReloading.com for the most accurate, up-to-date data.

Available in 1-LB and 8-LB containers.

IMR Legendary Powders is a line of smokeless powders which are popularly used in sporting and military/police firearm cartridges. The initials ‘IMR’ stand for Improved Military Rifle powder. IMR powders make a line of various types of smokeless powders such as IMR 4831. IMR Legendary Powders are suitable for loading many cartridges for rifles, handguns, and shotguns. In 2003 the Hodgdon Powder Company purchased IMR powders.

Important Information

• Do not exceed the loads displayed in the reloaders guide.
• Never mix any two powders regardless of type, brand, or source.
• Never substitute any smokeless powder for Black Powder or any Black Powder substitute.

If you’re looking for a quality propellant powder that you can depend on, you’ll want to bring along IMR® 4831 Smokeless Reloading Powder the next time you’re out in the field.