Best use for IMR 4227?

David Sinko

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What good is this stuff? I bought a pound because the seller was literally throwing it at me to get rid of it. I know it's used as a magnum revolver powder, but is it any better than either 296 or 2400 which I already use? It looks like its other redeeming quality is the .22 Hornet, which I do load on occasion. Is there anything else?

Dave Sinko
 
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I've used it in 30 Carbine years ago. I recently loaded some 44 Specials with it and it did okay but it won't replace Unique.
 
I was researching loads for 7.62 x 39 and it was listed in the Lyman manual pg 242 for use wth a Hornady 123 gr sp #3140. Start load 20 grains. I have also seen it listed in the Lee, Hornady and Lyman manuals for use with various weight 357 loads.
 
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357 Maximum and 4227 are made for one another. You can burn it up in the 357 Magnum, but I only use it in my Max's. Works great!.

In the magnum it is a bit slower than 2400 and needs a good crimp to get it going. Think max loads only!
 
I use it for .30 Carbine, .357 Magnum, and .45 Colt. There will be a few unburned kernals in the handgun loads, but accuracy is so good that I can easily overlook it.

Don
 
I switched to 4227 in all my .38, .357 and .45 Colt loads. Big improvement in accuracy. Always had trouble finding a good load for a snub .38 and this solved the problem.
 
If you load 44 magnum, try 22 grains under a 240-250 grain lead bullet. This is a slightly compressed load (it's ok, Hodgdon lists it as a compressed load in their load data). This load under 240 gr. lead truncated cone bullet from Penn Bullets is superbly accurate in my 44s. I got the load from Penn's website.

Doesn't seem to be as "sharp" in recoil as most other full 44 mag loadings. Quality of the slower burning powder, I guess.
 
It is my preferred powder in .460S&W and hunting rounds for .44mag and .357mag, both in revolvers and carbines. While it does not give me quite the velocities that H110/W296 gives, it is just as accurate and is much less temperature sensitive. Best accuracy comes from loads that are nearly to slightly compressed.
 
I guess I'll try it in the .22 Hornet and maybe 7.62x39. I load very little Hornet (it's my brother's Contender barrel) and it seems I hit the magic load on my very first try with 296. I find that the 7.62x39 is a tough one to load with softpoints. Very few handloaded softpoints produce acceptable accuracy in my AKM, so I'm willing to try anything different.

Does it need a magnum primer in the revolver loads? I have never used a single magnum pistol primer and have no intentions of starting now.

Dave Sinko
 
I've been using 23 grs with the 429421 in 44 mag for many years now. It gives 1250 in a 6 1/2" M29, 1300 in my Redhawk. It is accurate in every 44 I've tired it in, including a Marlin carbine. Primers are round, cases eject easily. Like Hammerdown said, recoil seems to be less sharp. As I've said here many times, I believe 4227 is easier on the revolvers than 296/H110. I saw enough back in the silhouette days in magnum revolvers to know it is true. It gives a little up to 296/H110 in ultimate velocity, but not enough to matter. A magnum primer isn't necessary.
 
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