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round for 1in14 twist

Discussion in 'Rifle Country' started by dreammaster74, Jul 8, 2006.

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  1. dreammaster74

    dreammaster74 Member

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    i have a rem 700 22-250 1in14 twist and 26in bll. what grain should i use.
     
  2. rangerruck

    rangerruck Member

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    50 grn or less should do nicely, you may make 55, but i would see it to believe it , first.
     
  3. buttrap

    buttrap Member

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    55s do just fine out of my 26 inch 1-14 twist gun.
     
  4. dreammaster74

    dreammaster74 Member

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  5. dreammaster74

    dreammaster74 Member

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    tried win 45s much tighter at 100
     
  6. mljdeckard

    mljdeckard Member

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    My dad uses 55s in the exact same rifle, I'll have to look at 45s.
     
  7. Jim Watson

    Jim Watson Member

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    MY .22-250 1 in 14" shoots 60 grain flatbase spitzers very well, thank you. It also shoots the 70 grain Speer semipointed well enough for its intended purpose.

    There are two common misconceptions about rifling twist current on the Net.
    One is that rifling twist - bullet matchups are very selective and restrictive. Actually they are very flexible as long as the bullet is stabilized at all.
    The other is that the Greenhill formula applies closely to smallbore spitzers.
     
  8. Byron

    Byron Member

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    I have a 222 with a 1in14 twist.It is unerving the accuracy from Hornady's 55 grain SP. Byron
     
  9. CB900F

    CB900F Member

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    Fella's;

    Keep in mind that the ability to stabilize a bullet for a given caliber & twist is not only dependant upon the bullet weight, but also the velocity of the bullet.

    900F
     
  10. Henry455

    Henry455 Member

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    I have always heard its more dependent on bullet LENGTH than weight.
     
  11. Vern Humphrey

    Vern Humphrey Member

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    That's correct. The Greenhill forumla is Twist = (bullet diameter^2 X 150)/bullet length. While this is really just an emperical rule-of-thumb, it's right for most small arms calibers, over most velocities.

    In this case, we have 14=(.224^2 X 150)/bullet length. Or 14 = 7.5264/bullet length. Bullet length =7.5264/14.

    So bullet length could run up to a half inch or so.
     
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