IMR Powder

IMR is one of the oldest smokeless powder brands and has considerable historical significance as a supplier of propellants to both the US and Allied militaries during both world wars, producing about 2.5 billion pounds of powder during WWII.

During the war, IMR established a plant in Valleyfield, Canada; this plant is now owned by General Dynamics and continues to produce propellants. Hodgdon is the US distributor for IMR powders.

The name IMR stands for "Improved Military Rifle." You'll find their full line of powders in-stock and for sale below with fast shipping.

9 product(s)

  1. IMR Powder - White Hot 50 Cal - 72 Pack

    IMR Powder - White Hot 50 Cal - 72 Pack

    $15.75

    In stock

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    Manufacturer IMR
    Manufacturer SKU WHP50
    Powder Type Muzzleloader
    Powder Weight 72 Pack

    IMR .50 caliber "White Hots" are a premium substitute for black powder which feature a clean burn with little residue or odor, compatibility with any breech type or standard 209 primer, dependable ignition and consistent performance in any temperature, and flat accurate shots at up to 2,300 feet-per-second. Each of the 72 pre-formed pellets weigh 50 grains, are easy to handle and carry , and will effortlessly slide down the barrel. In addition "White Hots" come packaged six to a tube (12 tubes total) for convenient storage and weather resistance and cleaned up after with a single wet water patch.

    Get a jump on "primitive" weapon season by ordering your 209 primers and .50 caliber bullets from Widener's as well for the most convenient package directly to your door.

  2. IMR Powder - 4320 - 1 lb

    IMR Powder - 4320 - 1 lb

    $18.00

    In stock

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    Manufacturer IMR
    Manufacturer SKU 943201
    Powder Type Rifle
    Powder Weight 1 lb

    IMR 4320 is a short-cut grain powder with a slow burn rate intended for high capacity rifle cartridges. The smaller grains of this powder make metering a breeze and allow for consistent accuracy and performance shot-to-shot. IMR 4320 propellant can support a wide range of popular rifle calibers including, but not limited to, .223 and .22-250 Remington, .270 Swift, .250 and .300 Savage, and .30-06 Springfield.

    Our generous powder selection is complimented by a wealth of projectiles and other components so that you can complete your shopping all in one place.

    Customer Reviews

    very helpful and self explanatory. I appreciate this very much

    Please keep up the good info for the shooter and re-loader. hk

    Review by rev. (Posted on 6/17/16)

  3. IMR Powder - 7977 - 1 lb

    IMR Powder - 7977 - 1 lb

    $19.25

    In stock

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    Manufacturer IMR
    Manufacturer SKU 979771
    Powder Type Rifle
    Powder Weight 1 lb

    IMR 7977 is a slow-burning extruded powder which performs excellently when paired with heavy magnum rifle calibers like 7mm Remington Magnum, .338 Lapua, 6.5mm-284 Norma, and many others. As one of the IMR Enduron propellants, 7977 exhibits resistance to velocity shift caused by extreme temperatures while igniting cleanly due to an integrated copper fouling eliminator. In addition, IMR 7977 propellant features small grains for seamless loading and an ingredient list which is entirely environmentally friendly.

    Combine this excellent powder choice with other components from Widener's like these magnum primers for superb results and increased savings.

  4. IMR Powder - 7828 - 1 lb

    IMR Powder - 7828 - 1 lb

    $19.50

    In stock

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    Manufacturer IMR
    Manufacturer SKU 978281
    Powder Type Rifle
    Powder Weight 1 lb

    IMR 7828 is THE premier powder for loading big bore magnum rifle rounds for sporting and hunting use. With a slow burn rate, high energy, and great dependability, the reputable IMR 7828 propellant is ideal for heavy loads in calibers like 7mm Remington Ultra Mag, .300 Winchester Magnum, .243 Winchester, and countless others.

    Here at Widener's we make it a point to carry other necessary components such as bullets to compliment your powder order so you can spend less time browsing and get back to loading and shooting!

  5. IMR Powder - 7828 SSC - 1 lb

    IMR Powder - 7828 SSC - 1 lb

    $20.00

    In stock

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    Manufacturer IMR
    Manufacturer SKU 978281S
    Powder Type Rifle
    Powder Weight 1 lb

    IMR 7828 SSC is perfect for giving some extra fire to popular big magnum loads like .300 and 7mm Remington Ultra Mag. This "SSC" variation uses the same formula as the ever popular IMR 7828 but comes in a short grain package for more velocity potential, better metering consistency, and the ability to fit some cases that the original powder will not.

    Widener's also carries the projectiles and primers that you need to build up the perfect magnum rifle rounds.

  6. IMR Powder - 3031 - 1 lb

    IMR Powder - 3031 - 1 lb

    $20.50

    In stock

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    Manufacturer IMR
    Manufacturer SKU 930311
    Powder Type Rifle
    Powder Weight 1 lb

    IMR 3031 has a plethora of sporting applications from loading .223 and .22-250 Remington varmint rounds to switching seasons and stepping up to fuel .30-30 cartridges for hog and deer. IMR 3031 propellant is even used for precision match .308 loads pushing the most popular 168 grain open tip projectiles to extreme ranges with superb accuracy.

    Whether you're aiming to max bag limits or trying to post a sub .25" MOA group, Widener's has top brands of bullets and other components to support your goal.

    Customer Reviews

    Very reasonably priced

    Prices are very good.

    Review by Brian (Posted on 8/30/16)

  7. IMR Powder - 4831 - 1 lb

    IMR Powder - 4831 - 1 lb

    $22.75

    In stock

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    Manufacturer IMR
    Manufacturer SKU 948311
    Powder Type Rifle
    Powder Weight 1 lb

    Originally used to load WWII-era 20mm cartridges, IMR 4831 is a slow burning powder with a great reputation for pushing heavy projectiles from medium-sized magnums at excellent velocity. Venerable reloaders choose IMR 4831 propellant for top accuracy in a wide array of calibers including 7mm Remington Magnum, .338 Winchester Magnum, and .270 Weatherby Magnum.

    Shop for components the smart way when you combine primers and projectiles with your powder order for the best savings.

  8. IMR Powder - 7828 - 8 lbs

    IMR Powder - 7828 - 8 lbs

    $127.50

    In stock

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    Manufacturer IMR
    Manufacturer SKU 978288
    Powder Type Rifle
    Powder Weight 8 lbs

    IMR 7828 has a slow burn rate which produces a high amount of energy perfect for heavy rifle loads and especially for large bore magnum rounds. Many experienced reloaders know IMR 7828 for its economical price and ability to throw heavy projectiles downrange with ferocious velocity and accuracy worthy of applause. Some of the calibers this propellant is suited for include .30-378 Weatherby Magnum, .300 Winchester Short Magnum, and even medium calibers like .243 and .270 Winchester loaded with heavy bullets.

    Whether you're starting a new load workup or already have the perfect recipe bought and paid for, Widener's stocks some of the top brands of bullets and primers in order to get you the components you need in the most convenient package.

  9. IMR Powder - 4227 - 8 lbs

    IMR Powder - 4227 - 8 lbs

    $141.50

    In stock

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    Manufacturer IMR
    Manufacturer SKU 942278
    Powder Type Handgun, Rifle
    Powder Weight 8 lbs

    IMR 4227 is suitable for small game rifle cartridges as well as for magnum pistol calibers like .357 Magnum and .44 Remington Magnum. This propellant is noted for its excellent velocity and accuracy in smallbore rounds like .204 Ruger and .22 Hornet as well as short lever-action cartridges like .32-20 Winchester.

    Get the most from your Widener's order when you add in primers and other components for cost efficiency under a single HAZMAT surcharge.

    Customer Reviews

    Super versatile powder, clean burning and works well in 221FB, 222 Rem, 223

    Super powder

    Review by Jeffrey (Posted on 3/31/16)

9 product(s)