7mm ultra

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by sharpshooter1, Feb 6, 2007.

  1. sharpshooter1

    sharpshooter1 Well-Known Member

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    I am planning a build soon, and I need to know what twist rate would suffice for most 7mm bullets over 175 grains @ 2900-3100 FPS (especially the 180 berger and the 200 wildcat...).... thanks, sharpshooter
     
  2. hoghound

    hoghound Well-Known Member

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    I think Kirby's useing a 1-8.7 twist for the 200 grainers.

    Tim
     

  3. sharpshooter1

    sharpshooter1 Well-Known Member

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    Ok, I was thinking a 1-8 twist 3 groove Pac-nor tube for my savage ultra mag... Thanks for the quick response!
     
  4. MagMan

    MagMan Well-Known Member

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    Yup, its the Rock thin land 1 in 8.7 5R.
     
  5. TMR

    TMR Well-Known Member

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    He is using a 1-9 for the 7mm AM's in Lilja....

    I have a 1-9 twist 7mm STW that I am going to try the 200 grainer in soon.
     
  6. NYLES

    NYLES Well-Known Member

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    yup, thats whats goin on mine!
     
  7. sharpshooter1

    sharpshooter1 Well-Known Member

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    Cool, I am trying to convince myself to go with a rock barrel, but they don't pre-fit barrels, and I don't have a lathe lol. So does anybody know where the best place is to have a blank chambered and threaded for my savage action? (I can install and headspace myself...)
     
  8. James Jones

    James Jones Well-Known Member

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    unless you wanting to keep it stock looking I'd have it fitted up like on the Rem 700 without the nut.

    Call Mike and ask , he might be able to figure somthing out for you. If not but the barrel and have your smith fit it , give Nate Dagley a call , his web like in in my signature box , hes a hell of a rifle builder that just hasen't gotten the exposure yet.
     
  9. sharpshooter1

    sharpshooter1 Well-Known Member

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    JDJ, I am wanting to keep the barrel nut set-up so I have barrel switchablity (is that a word? /ubbthreads/images/graemlins/crazy.gif) I think im just gonna call Mike tomorrow morning.....