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Sako Action Specs for threaded barrel

Discussion in 'Sako Long/Magnum Actions' started by tlewis0342, Feb 17, 2010.

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  1. tlewis0342

    tlewis0342 Member

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    I have inherited a new Hart SS 30-06 Akley Improved barrel. It is threaded for the Winchester action which is 1"X16 tpi. Of course I want to build it on a Sako action. Does anyone in the Sako Nation know which model Sako's are threaded 1"x16tpi?

     

  2. barreltwister

    barreltwister Well-Known Member

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    the L579/AII is 1" x 16 tpi.........action is too short for a 30-06 though......I know an AV thread is about 1.04 x 16 tpi...maybe the L61R is 1"?..never had a barrel off an L61R

    If the shank on your barrel is long enough it could be cut back and rethreaded and rechambered.
     
  3. Anonymous

    Anonymous Sako-addicted

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    tlewis,
    I'm quite certain all of the measurements on Sako are metric. Sometimes, when doing a conversion from metric to inches you may run into an overlap that's very close. However, once it gets close to the receiver it will start to seize up on you. Most of my Sako's are L61R's and I'm quite sure, again, that it won't work. Mostly, SAE and Metric do not get along with each other.
    How long is the barrel? Twister's idea would work, but no doubt involve a little money :sad2:.
    FWIW,
    S-A
     
  4. misako50

    misako50 Sako-addicted

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    tlewis0342-The A series and the 75 series should fit the L61R recievers (1.04 in16) unless they are the very early ones of three digit serial numbers (1 in 16"). So there is your answer BUT, I don't know the cutoff date when they went to a larger size. -Mike
     
  5. tlewis0342

    tlewis0342 Member

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    Twister's idea would be my best bet with a good gunsmith. But, I think that my best bet is to find a buyer for the Hart barrel, get a Sako action, and build from there. I really appreciate all of the info provided. Now, I understand that barrel/action matching is not simple...especially trying to work metric and english measurements!
     
  6. barreltwister

    barreltwister Well-Known Member

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    Sakos are not metric.

    The ones I've barreled are L461/AI @ .875 x 16 tpi, L579/AII @ 1" x 16 tpi and AV's @ 1.04 x 16 tpi.

    75's and 85's as well as Tikka T3's are 1" x 16 tpi.

    I have take offs from an L461 and a T3 at the shop. I'll measure them over wires and get back to you guys.
    I also have one from an M995 and that one is metric.
     
    Last edited: Nov 12, 2017
  7. Johan Lindh

    Johan Lindh Member

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    Are you shure they are not 22x1.5, 25x1.5 and 26x1.5 which all are standard metric fine (MF) threads. The difference of 1/16 and 1.5 mm/turn is 6 thou over an inch.

    The M995 has a 27x1.5 thread.
     
  8. barreltwister

    barreltwister Well-Known Member

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    They are not 1.5mm pitch.

    I've chucked them up and checked movement with one turn of the barrel, it's .0625. A 16 tpi pitch gauge fits perfectly.

    1.5mm is .059055...a difference of more than .003 per turn is easy to see. Over 8 turns a 1.5mm pitch would move only .47244" axially while the 16 tpi would move an even half inch of course.
    A difference of ~.0275, or almost a half turn.

    When threaded 16 tpi they fit perfectly.
     
    Johan Lindh likes this.

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