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223 with 1/14 twist load

Discussion in 'General Reloading' started by deepdarkwater, Nov 24, 2012.

  1. deepdarkwater

    deepdarkwater G&G Newbie

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    hello everyone I just built a new ar15 223 with 1/14 twist and just wanted to see if anyone. luck with loads for one I jumped the gun and shot it about 10 time sightint in cleaned it than went to the reloads . the groups I wasn't to impressed with 1/2 up to 1 1/5. I hope the groups tighten up the more ishoot it up just want to see if anyone reloads for that twist


     
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  2. MosinRuger

    MosinRuger G&G Evangelist

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    based on the rule of thumb that would be best with lighter bullet weights(45-55gr), where a faster( 1/9-1/7) twist rate would be better for heavier bullets(62-77gr)
     
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  3. Browning

    Browning G&G Newbie

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    Sounds like a good varmint hunting gun. Try some 55 grain V-max or 52-53 gr HPBT MatchKings. Varget or XBR8208 powder.
     
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  4. deepdarkwater

    deepdarkwater G&G Newbie

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    I was shooting. horn 40gr vmax horn 52 and 53 bthp and amax and next ill try some sierra. I had some groups that was cutting 1/4 to 3/8s. 3 shot groups but the other 2 shoots would be flyers grouped 3/4 to 1 away
     
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  5. runfiverun

    runfiverun G&G Evangelist

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    stick with the lighter bullets.
    where did you get a 1-14 twist bbl?
    that would be sweet with cast boolits.
    i can run just over 2700 with my 12 twist 223 i think i could break 3-k with lead in a 14 twist [i'm talking under 1" consistent accuracy with these speeds]
     
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  6. deepdarkwater

    deepdarkwater G&G Newbie

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    model1sales.com. I think the complete upper is 500 and something
     
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  7. tappedandtagged

    tappedandtagged G&G Evangelist

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    Try the greenhill formula. It takes into account the length of the bullet (which is what matters with twist, not weight). However, heavier bullets of the same caliber are longer, but some bullets ,ie all copper, must be even longer to reach the same weight, so going by bullet length is a more accurate way of finding the bullet your twist will like.


    Max bullet length = diameter X diameter X 180 (see note) /twist

    Note: use 180 for 2,800 fps and above and 150 for under 2,800 fps.

    0.64512= .224 X .224 X 180 / 14

    So, use bullets shorter than 0.64512" and it should work well. Some bullet manufactuers will give you the bullet length on their website. The rest, you can usually find somewhere online. Or, if one of us loads it, I'm sure we'll be glad to caliper it for you.
     
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  8. runfiverun

    runfiverun G&G Evangelist

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    excellent,, thank you.
     
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  9. deepdarkwater

    deepdarkwater G&G Newbie

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    not a prob fiver I think I'm going to make some dummy rounds to the 2,260 mag length and see how thay chamber after rereading sierra and horndy about all of sierra are close to 2.250 col for the ar 15
     
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    Last edited by a moderator: Nov 26, 2012
  10. Range Rat

    Range Rat G&G Newbie

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    I find it strange that you are getting 1/2 inch groups and are complaining they are not up to the mark.

    Can you post a couple of targets, so we can see that you are actually getting something like this?
     
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  11. Dark1

    Dark1 Suspended

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    If it is a model 1 upper that is about as good as they get they have a 3moa tolerance for there uppers so TBH yours is a good one.


    Sent from my iPhone using Tapatalk DAMB AUTO CORECT !!
     
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  12. Txhillbilly

    Txhillbilly G&G Addict

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    And just where did you come up with that information?
    Over the years,I've used several different Model 1 uppers on builds,although none were a 1-14 twist. I always use a 1-7/1-8/or 1-9 twist on my rifles.
    Most of the barrels that Model 1 uses are made by E R Shaw.
    While E R Shaw barrels aren't the very best,they will certainly shoot a hell of a lot better than 3moa anyday unless your shooting crap surplus ammo.
     
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  13. Dark1

    Dark1 Suspended

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    Most are 1.5 MOA ish but the max they allow is 3 MOA the same that is tolerated by the .Mil. For the info because one of the people I do some work fore got one and it was shooting 2moa out of the box using a lead sled he contacted Mod 1 amd they informed him that that was executable and aslong as it was shooting less than 3moa that would not replace the upper.


    Sent from my iPhone using Tapatalk DAMB AUTO CORECT !!
     
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  14. DaTeacha

    DaTeacha Things are not what they seem. Forum Contributor

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    Where did you find an AR barrel with a 1/14 twist?

    That's a twist found on some 22-250's. My Ruger is 1/12, I think some Remingtons are 1/14.

    My AR barrels are 1/7 and 1/8.
     
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  15. runfiverun

    runfiverun G&G Evangelist

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    my ruger V/T is 1-12, and my old win model-70 22-250 is 1-14 as is my 220.
    two of my ar's are 1-9 and my new stag model-6H is 1-8.
    the 22 long rifle is 1-16 and so are some [the older ones with 223 diameter bbl's] 22 hornets airc the new ones are 1-12.
     
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  16. Palladin8

    Palladin8 G&G Evangelist

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    I would think the 40gr through 55gr would be the sweet spot. I have always had my best accuracy overall with Sierra bullets out of most all my different calibers.
     
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  17. deepdarkwater

    deepdarkwater G&G Newbie

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    ill try and. get the targets loaded to a pc from my phone. when I say 1/2 groups. range rat 3 of the 5 shoot test loads if I can get all in a 1/2 inch group ill be happy
     
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  18. Blackrock

    Blackrock G&G Evangelist

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    Try some IMR4198 and 55g bullets. Load it like you would a .222 rem and it should work for you.
     
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  19. ChaZam

    ChaZam G&G Evangelist Forum Contributor

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    Model 1 Sales: 5.56/.223 Bull Barrel

    ^ The 24" barrel is available in the 1-14 twist Rich. ^
     
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  20. DaTeacha

    DaTeacha Things are not what they seem. Forum Contributor

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    HOLY COW! A 24" bull must weigh about a ton when you get the whole gun made up. My 18" bull barrel set up, with a medium size scope and aluminum free float tube seems really heavy compared to my 16" HB gun. Adding 6 inches of Bull Barrel hanging out front would definitely tend to reduce muzzle rise!
     
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