Production of IMR powders dates back over 200 years when the company was originally founded by E.I DuPont. Available for use in many reloading applications, the IMR series of powder is trusted by reloaders all across the globe.
IMR 4227 is the Magnum Pistol Powder in the IMR lineup. If it says Magnum, IMR 4227 is the choice for true magnum velocities and performance. In rifles this powder delivers excellent velocity and accuracy in such cartridges as the 22 Hornet and 221 Fireball.
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.
Christopher Langford –
IMR 4227 is my go-to powder for .44 Magnum and .30 Carbine. Burns clean, meters well, and provides excellent accuracy. A fantastic powder for magnum handgun loads!
Melissa Davenport –
This powder works great for my .357 Magnum reloads! Consistent ignition and clean-burning performance make it a staple on my reloading bench.
Jonathan Ramirez –
I’ve tried many powders, but IMR 4227 delivers the best velocity and accuracy for my .300 Blackout loads. Perfect for both supersonic and subsonic rounds.
Nicole Baxter –
Whether I’m loading for revolvers or rifles, IMR 4227 provides reliable performance. My .22 Hornet loads have never been more accurate.
Bradley Simmons –
Absolutely love this powder! It meters smoothly, ignites cleanly, and performs incredibly well in my .44 Magnum. A must-have for revolver enthusiasts.
Jennifer Thornton –
IMR 4227 has been a game-changer for my .357 Magnum and .32-20 Winchester loads. Very consistent and provides outstanding shot-to-shot precision.
Matthew Delgado –
This powder is great for magnum pistol loads. I get smooth cycling and reliable ignition in my .41 Magnum and .30 Carbine rounds.
Vanessa Holloway –
The versatility of IMR 4227 is what makes it special. I use it in my .300 Blackout and .357 Maximum, and the performance is exceptional every time.
Derrick Fowler –
I tested IMR 4227 in my .44-40 loads, and I’m amazed at how well it performs. Super consistent and burns much cleaner than other powders I’ve used.
Brittany Coleman –
Fantastic powder for my lever-action rifles! Works great in my .45 Colt and .218 Bee. Burns efficiently with minimal fouling.
Aaron Whitaker –
IMR 4227 is one of the best powders I’ve used for heavy bullet loads. My .300 Blackout subsonic rounds are incredibly consistent and accurate.
Rachel Goodman –
This powder produces great velocity and tight groupings. Works wonders in my .357 Herrett and .221 Fireball reloads. Highly recommended!