What twist is necessary to stabalize the 107 in a 243 AI

Discussion in 'Reloading' started by 308sako, Mar 19, 2005.

  1. 308sako

    308sako Well-Known Member

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    The topic is the question, please help.
     
  2. dbhostler

    dbhostler Well-Known Member

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    I use an 8 twist in my .244 AK for the 105-107s.
    db
     
  3. James Jones

    James Jones Well-Known Member

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    Yep , I to use a 1-8 in a 243Ai shoots the 107 SMK and 105 A-max great. The only thing is that when I run the lighter bullets out at full speed some will blow up due to the high rpm
    I thought about the next barrel being a 1-7 so I could shoot the 115gr Berger VLD's with a BC of almost .6 they should be able to buck the wind realy well.
    The 1-8 shoots the 105gr Berger VLD's pretty good so long as you keep the speed down , i have to run them about 200fps slower than the SMK or A-max's
     
  4. 308sako

    308sako Well-Known Member

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    Thanks, gentlemen... I was thinking what the minimum might be as my Cooper has a 1 in 10 ratio. I guess I'll have to try a few and see what happens. I prior experience with a 6 Rem 40X was with a 1 in 12 and Berger 90 grain bullets were great for about 1,000 rounds and then wouldn't! Also altitude helped that one out. Marginal was the word of the day.