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Thread: Optimizing 223 loads for a short barrel.

  1. #11
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    Quote Originally Posted by TomPenguin5145 View Post
    That load is .3 gns over max, but all my rifles, 18 mid, 14.7 mid, and the 10.5 carbine run it fine. No signs of pressure. All are chambered in 5.56.
    Powder lot variances are so great that load data is really a rough approximation. You could probably go hotter if you wanted. I often use published max as the starting point for .223/5.56 loads.
    "You people have too much time on your hands." - scottryan

  2. #12
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    Bullet of your choice and RL10x or AA2015 for powder. If you have a chrono move up to IMR3031 or AA2230 if you want to try to get more velocity.

    kwg

  3. #13
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    Quote Originally Posted by markm View Post
    Powder lot variances are so great that load data is really a rough approximation. You could probably go hotter if you wanted. I often use published max as the starting point for .223/5.56 loads.
    ^^Gospel.

    Lot variance, without load workup for new lots, effectively screws my ballistic data/DOPE.

  4. #14
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    Quote Originally Posted by kwg020 View Post
    If you have a chrono move up to IMR3031
    That's the one powder I still want to mess with.
    "You people have too much time on your hands." - scottryan

  5. #15
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    I like 24.6 grains of 3031 for accuracy. I don't own a chrono so I can only speculate on the velocity. But it is accurate out of any of my 16" rifles.

  6. #16
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    Yeah. I am thinking I could go much higher, but 23.3 is getting me to the velocity needed for 68BTHP to work so I don't see the need to shove it further.

  7. #17
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    Max loads are subjective.

    Try the 60gr Nosler BT. They look like the Sierra Blitz King and the Hornady V-Max.

    They are very, very different though. (Much tougher) I am a hunter and don't know much about human bullets and tactical stuff.

    H4895 & Benchmark will serve you well.

    Slower powders can make the rifle cycle harder.

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