IMR® 4227
$39.99 - $267.99
IMR® 4227
IMR® 4227
IMR® 4227
IMR® 4227

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.

In rifles, this powder delivers excellent velocity and accuracy in such cartridges as the 22 Hornet and 221 Fireball.

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

Available in 1-LB and 8-LB containers.

SKU: 

Warnings for California Residents

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WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information, go to www.P65Warnings.ca.gov

Reviews and Ratings

Name
sam allgood
rifle powder

good stuff for beowolf

10-Dec-2020
Name
George Dean Morrison
Dispenses well. Accurate loads

Dispenses well. Accurate loads

06-Mar-2021
Name
Chad L
IMR4227

Good consistent groups out of super blackhawk 44mag with cast and some of the best accuracy I've had in my 300blkout with 150s

06-Mar-2021
Name
MCAK
44 rem mag and 30 carbine powder

I use this for 44 rem mag and 30 carbine loads. The old wc military powders had issues in cold weather. I live in alaska. I’ve found 4227 much better at frigid and below zero temperatures than h110. Loads well and shoots well in the application I’m using it for. I have thought about working up some 45 long colt and 454 casull rounds with 4227 but haven’t researched it and haven’t done it, not sure if it’s even feasible.

21-Apr-2021
Name
Johnny
450BM LOVES this powder!

250gr Hornady fxt 34gr IMR 4227 = dead deer! I have a custom built bolt action with a 26" bbl and I can shoot 5 rd clover leafs all day! Love this powder never stop making it! If you have a 450 try it you won't be sorry!

21-Aug-2021