IMR 4227, what's it good for?

I like IMR 4227 in the larger caliber revolvers - 44.Mag and up. I bought 8lbs of it a few weeks ago
Where are you located? I maybe could trade you a pound of something.

It can be used for magnum pistol like 44 and 357, also used for cast bullets in some rifles like 308 and 30-30.

I used it in 7.62x39 but haven't loaded that cartridge in about 2 decades. Could try it 300 blackout too.

I use it in:
7.62 x 39
357 Mag
Works fine
Look i here:https://www.xxl-reloading.com/IMR-4227

It’s one of the best powders available for .22Hornet, .218Bee, .222Rem with a cast 50 or 55gr RFN, or in any pistol cartridge carbine in one of the WCF cartridges, plus just about any magnum pistol cartridge, as mentioned. It makes a great powder for cast heavy bullets in .30-30, .30-40, .30-06, .35Rem, or .45-70.
It’s a real versatile powder just nobody loads it in AR’s or carry 9mm’s so it tends to be forgotten.

If you have a pistol cartridge rifle or carbine, it works very well there, too. I’m just aboot done with my 8#er of it, most going through my Marlin 1894 in .41MAG.

It's a very versatile older powder. Its listed for 55 and 60 grain cast bullets in 223. Its not a full power jacketed 223 powder.

23 grains behind a 150 grain cast 308 bullet is also good.

Good for 300blk subsonic. Been trying to find more.

I use it for 300 BLK, sub and supersonic, also 450 Bushmaster.

One use for it that hasn't been listed is 30 carbine. it works well there, but I still try to use H110 if I have it.
I didn't like it so much in 357 magnum, but in 44 mag I like it pretty well.

AJC1 said:

It's a very versatile older powder. Its listed for 55 and 60 grain cast bullets in 223. Its not a full power jacketed 223 powder.

23 grains behind a 150 grain cast 308 bullet is also good.

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I agree it's great in cast 308. But I was using 245 grain bullets and 19 grains.
I've gone off the reservation and used it for reduced velocity full pressure loads in my AR.

I've tried it in .30 Carbine, 300 Blackout, .44 Mag and cast bullets in various HP rifle rounds.

It works OK in lots of stuff, but I've always had other powders that worked better.

I think it's best as a "collector powder".

Look on past threads asking about the oldest can of powder people have and 4227 comes up a LOT.

AJC1 said:

It's a very versatile older powder. Its listed for 55 and 60 grain cast bullets in 223. Its not a full power jacketed 223 powder.

23 grains behind a 150 grain cast 308 bullet is also good.

Click to expand...

Yep. I cast the Lee 55gn for my AR and 12.7 grains of IMR4227 cycles reliable at 2180fps. I also use a lot of 4227 in 500 Mag.

Charlie98 said:

If you have a pistol cartridge rifle or carbine, it works very well there, too.

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Have found this to be true for 357 Magnum rifles as well, developed several consistently accurate loads for mine.

Mostly used for the bigger revolver calibers, but also as mentioned in several cast rifle loadings.

If you wanted to use cast in your AR try the powder coated versions and they should run fine with no leading.

Works well in my .25 - 20.

rifles. Arms made a 10 ml, a muzzle loader designed to shoot smokeless powder. quite a few years ago. Imr 4227 was a recommended powder in the early guns, but was discontinued load in later manuels, iirc poor ignition was the cause but not sure.

It also was used in .410 loads years ago.

It is my go to powder for hunting loads in my .460 revolver and in my .44 carbines. It likes heavy bullets, compressed or nearly compressed powder, a tight crimp and long pipes. It does not give the velocity I get from H110/W296 in those calibers, but it gives me the best accuracy. I know it is used in some rifle calibers, but which ones I have not a clue.

I use it in reloading my 7.62x39, .300 Blackout, & my new 350 Legend.

300BO, 450 Bushmaster, 30 Carbine.

4227 goes nicely with the 300 Blackout and light bullets.