223 1 in 12 twist, which bullet weight?

Discussion in 'The Powder Keg' started by bountyhunter24, Feb 24, 2009.

  1. bountyhunter24

    bountyhunter24 G&G Newbie

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    I have a rem 700 sps varmint in 223. The twist is 1 in 12. What bullet weight or weights would probably be the best for this rifle?


     
  2. runfiverun

    runfiverun G&G Evangelist

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    50-53
     
  3. telkev

    telkev G&G Newbie

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    Up to a 55gr bullet.
     
  4. texnmidwest

    texnmidwest Sir Loin of Beef Forum Contributor

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    That rate of twist should shoot better with lighter weight bullets. Try 55gr and then try lighter bullets like the 45gr. See which one shoots best.
     
  5. SightNSqueeze

    SightNSqueeze G&G Newbie

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    Yes. 55 grain. In fact 1:12 was the old barrel twist in the M-16A1 before the introduction of the M-16A2 with its 1:7 barrel twist. The 62 grain bullet was/is used primarily in the latter rifle.
     
  6. deadzero

    deadzero G&G Evangelist Forum Contributor

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    I thought the SPS Varmints were a 1:10 twist. not sure tho, i'd have to check. anyway my best accuracy with mine in .223 has been with 52 gr. Hornady A-Max bullets and 55 gr V-Max so far. I want to try some 62 gr. just to see how they will compare. testing still in progress.
     
  7. bountyhunter24

    bountyhunter24 G&G Newbie

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    I thought they were either 1in10 or 1 in 9, but I checked the remington website and it said 1in 12. I was surprised because I thought that heavier 223 bullets were becoming more popular.
     
  8. telkev

    telkev G&G Newbie

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    All remington "varmit" models have a 1-12 twist, and all remington "tactical" models have a 1-9 twist.
     
  9. lefty o

    lefty o G&G Enthusiast

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    the sps varmint is 1-12", and if you believe Ed Shilen, he says 55gr is the perfect bullet for that twist. my own sps varmint does very well with 50gr VMax's.
     
  10. 15AcreWoods

    15AcreWoods G&G Newbie

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    I just emailed Berger MFG about using a 73 gr bullet in my 22/250, 1 in 12 twist. The tech replied that that weight required a 1 in 9. below is his email:


    Sir,

    That particular bullet requires a 1:9” twist to stabilize. I’m not sure about the specific rifle you mentioned, but rifles chambered for .22-250 generally have slower twist rates like 1:12” and 1:14” for shooting the lighter bullets at high speeds. I can’t say for sure, but I doubt your .22-250 has a fast enough twist.

    -Bryan



    Bryan Litz

    Ballistician

    Berger Bullets
     
    Last edited: Feb 25, 2009
  11. ironhead7544

    ironhead7544 G&G Addict

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    55 gr is perfect for the 1 in 12.
     
  12. bountyhunter24

    bountyhunter24 G&G Newbie

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    Thanks for the info guys, I will start with some 55gr and try some lighter stuff later.
     
  13. remman

    remman G&G Newbie

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    i use 55gr in my Rossi 1 in 12, and ive been very pleased. granted, ive only put 40 rounds through it, but i havent had any problems
     
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