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 for the most accurate, up-to-date data.

Available in 1-LB and 8-LB containers.


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.

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Reviews and Ratings

sam allgood
rifle powder

good stuff for beowolf

George Dean Morrison
Dispenses well. Accurate loads

Dispenses well. Accurate loads

Chad L

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

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.

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!

Bruce quinn
I have been using imr for 50 yes. With my dad,and long after

All around powder for rifle and pistol

Robert S
IMR4227 Smokeless Powder

This powder was all I could get to reload my .44 magnum loads. Previously I used IMR 800 X powder. This powder takes twice as much in grains as 800 X. Therefore a pound of this product will not go as far as a pound of 800 X. Despite this the powder shoots fairly well and does not leave a lot of residue. It is fairly granular as compared to the 800 X powder which is lighter and is in disk form.This powder is more granular like small grains of sand. If I had the capability to get anything that I wanted I would choose the 800 X over this product.

Bill Eisel
Perfect powder…

…for my M1 carbine. 12 grains of 4227 with a 115 gr LRN and a 1.5” group at 50 yards.

Hodgkin Powders are the ultimate, IMO.

Mike Lee
works good

worked good

Bob K
IMR 4227 - Sharps Rifle

With the current shortage of reloading supplies, recently I purchased some IMR 4227. This powder has historically been used for magnum pistol loads. However, the manufacturer of the hard cast bullets for my Sharps do recommend this powder for reloading 45-70. I've used this powder with 300 and 405 grain bullets, with excellent results at 100 yards. Unfortunately, that is the only distance available to me where I reside. The load is very pleasant to shoot. normally 50 rounds every times I go to the range. With the cost of commercial ammunition, reloading is a must.