IMR® 4227 | Hodgdon



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IMR 4227 is a medium burn speed, magnum pistol propellant. If a pistol says Magnum, IMR 4227 is the choice for true magnum velocities and performance.

For more information click here

For more information click here


The Power of IMR 4227: Unlocking Its Potential

In the realm of reloading, one name has consistently stood out for its versatility and reliability – IMR 4227. This smokeless powder has earned a place of honor among reloaders and shooting enthusiasts alike. Whether you’re an experienced handloader or just getting started, understanding the potential and performance of IMR 4227 is crucial. In this comprehensive guide, we’ll delve into the world of IMR 4227, exploring its origins, characteristics, and how it can elevate your shooting experience.

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The Genesis of IMR 4227

IMR 4227, short for Improved Military Rifle, is a product of the legendary powder manufacturer Hodgdon. It has a rich history that traces back to the military’s need for a propellant that could meet stringent performance requirements. Hodgdon rose to the challenge and developed IMR 4227, a powder that quickly found its way into the civilian shooting world due to its exceptional properties.

Key Features

IMR 4227 boasts a range of features that make it a favorite among reloaders:

1. Versatility

IMR 4227 is renowned for its adaptability. It’s a popular choice for a wide range of cartridges, including magnum and non-magnum loads. This versatility makes it a go-to option for shooters who enjoy working with various calibers.

2. Consistency

Consistency is the key to accuracy, and IMR 4227 delivers on this front. Its granules are precisely cut and meter well, ensuring uniform ignition and velocities. This consistency directly translates to tighter groupings and improved accuracy.

3. Clean Burning

Unlike some other powders, IMR 4227 is known for its clean-burning properties. This means less fouling in your firearm and easier cleanup after a day at the range.

4. Temperature Insensitivity

IMR 4227 is designed to perform consistently across a wide range of temperatures. This is a crucial advantage for shooters who might encounter varying weather conditions.

Loading with IMR 4227

Now that we’ve explored the key features of IMR 4227, let’s discuss how to make the most of this versatile powder:

1. Selecting the Right Cartridge

One of the first steps in using IMR 4227 is to choose the right cartridge. It’s a suitable option for cartridges like the .357 Magnum, .44 Magnum, and many more. Ensure your choice aligns with the caliber you’re working with.

2. Measuring the Powder

Accurate measurement is crucial in reloading, and IMR 4227 is no exception. Invest in a high-quality powder scale and measure the powder charge precisely. A slight variation can affect your shooting performance.

3. Safe Practices

Safety should always be a top priority when reloading ammunition. Follow established safety guidelines, wear appropriate safety gear, and work in a well-ventilated area free from any open flames.

4. Testing and Tweaking

Reloading is a blend of science and art. Be prepared to test your loads and make necessary adjustments to achieve the desired performance. Keep detailed records of your reloading data for future reference.