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  1. #1
    Private Zombiem134d's Avatar
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    Default IMR 4227 for .223

    Hey everyone,
    I just bought some IMR 4227 and cannot seem to find any reloading data. I know it is not the ideal powder but it's tough finding the popular stuff. I am reloading .223 for my H&R and cannot find any data anywhere. Could you help a brother out. Thanks

  2. #2
    Colonel varmint's Avatar
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    This is not my testing....make what you will of it. GO TO HODGDONS website and see what they have for data. they manuf. your powder.


    Range Report – IMR 4227 behind 55g SPBT in my Oly AR 15.


    Range Report – IMR 4227 behind 55g SPBT in my Oly AR 15.

    I found the recipe for IMR 4227 on the Hodgdon’s website back in December. None on my manuals have 4227 in their tables. I looked online again today and it is gone. I think I know why, read on.

    Back in December, Hodgdon’s recipe started with 16.0 g and ended with 17.0 g.

    II really like the ease of metering IMR 4227. Much, much easier than IMR 4198 or 4064 – that’s one of the reasons for me trying IMR 4227.

    I also liked the idea if using less powder. Figured it would make my pound of powder go farther.

    So, I reloaded five recipes for IMR 4227 and none of them were satisfactory to me. All would make the Oly AR 15 eject the spent case, but most of the reloads would not drive the bolt back far enough to pick up the next round. I had to cycle the bolt by hand, using the charging handle.

    Here’s the range report: I fired 10 rounds of each.

    14.7 g of IMR 4227
    Highest fps – 2402
    Lowest fps – 2184
    Average – 2329.86 (+/- 72.12 fps)
    All ejected, bolt never went back far enough to pick up the next round.

    15.0 g of IMR 4227
    Highest fps – 2381
    Lowest fps – 2252
    Average – 2332.74 (+/- 48.25 fps)
    All ejected, bolt never went back far enough to pick up the next round.

    15.3 g of IMR 4227
    Highest fps – 2495
    Lowest fps – 2262
    Average – 2372.44 (+/- 122.56 fps)
    All ejected, bolt never went back far enough to pick up the next round.

    15.7 g of IMR 4227
    Highest fps – 2530
    Lowest fps – 2331
    Average – 2397.00 (+/- 133.00 fps)
    All ejected, the bolt went back far enough to pick up the next round 2 times.

    16.0 g of IMR 4227
    Highest fps – 2560
    Lowest fps – 2408
    Average – 2501.00 (+/- 59.00 fps)
    All ejected, the bolt went back far enough to pick up the next round 5 times.

    I’m going to reload 16.5g and 17.0g to see if they will chamber the next round.

    Do any of you guys have any experience with IMR 4227?

    PS

    While I was at it, I chronied 10 Remington Factory 55g loads, here’s the results
    Highest fps – 2867
    Lowest fps – 2724
    Average – 2801.4 (+/-65.60 fps)
    AR functioned flawlessly.

    Later, I chronied 10 more of my 55g reloads, they were a recipe from my reloading manuals, 24.8 g of IMR 4064:
    Highest fps – 2739
    Lowest fps – 2597
    Average – 2674.93 (+/-64.07 fps)
    AR functioned flawlessly.

  3. #3
    Private Zombiem134d's Avatar
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    Thanks, I just needed some numbers to go by. I will check the website for further data. I will keep you posted on the loads. I too have an Olympic Arms M4 and now you have sparked my interests. Thanks again Varmint

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