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300 blk barrel twist

Discussion in 'Rifle Discussion' started by Vaultman, Sep 2, 2015.

  1. Vaultman

    Vaultman Clackamas Co, Oregon Well-Known Member

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    I have decided on a 300 blackout for my ar. I am going for a 16 inch barrel. What I do not know is what twist rate to go for. Any help on twist rate?

    I assume the question I am going to get back is along the lines of: "What grain bullet are you shooting? What velocity?" To which I will say I don't know this is my first 300 blackout.

    If someone know of a good article on this let me know, or just has a good opinion that would be great. Thanks all.
     
  2. Rockys

    Rockys Clark county Member

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    Most 300 blk barrels I've seen are either 1-7 or 1-8. The 1-7 should be a little better on the heavies and 1-8 on the lighter. I shoot 208 gr subsonics out of a 10.5" and it does fine.
     
    mjbskwim likes this.
  3. mjbskwim

    mjbskwim Salmon,Idaho Well-Known Member

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    Yep yep looks like 1-7 or 1-8 are the popular twist rates
     
  4. Vaultman

    Vaultman Clackamas Co, Oregon Well-Known Member

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    Thanks guys.
     
    mjbskwim likes this.
  5. Dyjital

    Dyjital Albany, Ore Flavorite Member Bronze Supporter

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    Apparently 1:7 with 5R is the cats meow...

    That I heard.