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model 70 winchester 22-250 bull barrel

Discussion in 'Rifle Country' started by robs257, Apr 27, 2007.

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  1. robs257

    robs257 Member

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    Mar 29, 2007
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    trying to find out the barrel twist, the rifle was made in 1977 , want to reload some 63 gr. boat tails , i was told being an older model rifle the heavier grain bullet might not perform as well.
     
  2. JesseL

    JesseL Member

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    Even if you find what the twist is, the only way to know for sure if your rifle likes the 63 gr bullets is to try them.
     
  3. robs257

    robs257 Member

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    thanks for your input.
     
  4. Chawbaccer

    Chawbaccer Member

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    Lyman 46 setting right here says you have a 1 in 14.
     
  5. jlmurphy

    jlmurphy Member

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    You can check the rifling rate by using a tight fitting patch on a jag, make a flag from tape on the rod, simply push/pull until the tape rotates once and measure how many inches the rod has traveled.
     
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