8 or 9 twist for 7 STW using 180 Berger?

Discussion in '7mm STW' started by motrophyhunter, Jul 14, 2013.

  1. motrophyhunter

    motrophyhunter Active Member

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    Going to build a left hand 7STW and wondering if I should go with a 8 or 9 twist for 180 VLD bullets? Also probably leaning to a 3 groove 27" with brake, any helpful thought based on your experience would be great.
     
  2. Lefty7mmstw

    Lefty7mmstw Well-Known Member

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    When I rebuild my rifle I'm going from a 10" twist 24" BBL to a 9" TWIST 26-27"; that'll be years away from now though and I'm loving the 140's going fast at present. Mudrunner and a few others are having good lock with the stw and a 9" twist and 180's. My 10" twist was on again/off again even on the 171 barnes hpbt.
     

  3. Len Backus

    Len Backus Administrator Staff Member

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    nine
     
  4. MudRunner2005

    MudRunner2005 Well-Known Member

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    As Lefty said, I have been having excellent luck with my factory Sendero SF 9.25" twist barrel.

    My A-Bolt II 7mag has a 9.5" twist and it shoots them ok, but it prefers the 168 VLD's.

    My .280 AI build will have a 1:9 twist.

    I have come to realize that a 1:9 is the most universal 7mm twist for shooting 160-190 bullets. I'm sure it would stabilize 140's just fine, too.
     
  5. Archery1973

    Archery1973 Well-Known Member

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    I have a 1:8.5" in prep for the 195 VLD.

    Right now, I'm shooting the 180 VLD and it does 0.227" 3 shot group at 100. Easily 1 MOA at 1000 and I'm sure better if a better shooter got behind the gun.
     
  6. motrophyhunter

    motrophyhunter Active Member

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    Who are you going to have do the barrel for you?
     
  7. MudRunner2005

    MudRunner2005 Well-Known Member

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    Whoa whoa whoa! 195 VLD? When & where?

    I wish they'd make a heavy-hitter 130 VLD for the .257 caliber... I've asked several times but they said working on .257 caliber bullets wasn't in the future as far as they could see...

    I sure wish they would, though...
     
  8. Archery1973

    Archery1973 Well-Known Member

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  9. 7stw

    7stw Well-Known Member

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    What he said, NINE! :D
     
  10. gamehawker

    gamehawker Well-Known Member

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    And what my buddy said, NINE! gun)