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Thread: 75 grain amax 222 rem

  1. #1
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    75 grain amax 222 rem

    Would a 75 amax stabilise in 1-8 twist 23 inch barrel in 222 Remington?

  2. #2
    Caretaker
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    Sometimes
    A big fast bullet beats a little fast bullet every time

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    Useful answer.
    kiwijames likes this.

  4. #4
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    I cant see why not? I believe 1in8 223's stabilise them so a 222 should, only one way to find out

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    They maybe to long for the mag

  6. #6
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    Depends on the gun and depends on the mag.
    About 15 years ago, I remember seeing a particular rifle in Scotland in 218 bee ackley improved shooting 80 gr Smk under 1 moa at 600 yards . You just need the right barrel twist and throat to achieve it.

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    Will give it a crack and report back.

  8. #8
    Member Marty Henry's Avatar
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    Use this formula to see if its feasable. If the bullet speed is over 2800 fps 180x bullet diameter squared/ bullet length = twist, if speed is below 2800 replace 180 with 150.
    This (the greenhill formula) and works for any copper and lead core bullet. Sometimes a bullet starts out stable but as speed drops precession sets in and no hits on target.

  9. #9
    Member Marty Henry's Avatar
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    Forgot to mention all measurements need to be imperial

  10. #10
    Lovin Facebook for hunters kiwijames's Avatar
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    Quote Originally Posted by Marty Henry View Post
    Use this formula to see if its feasable. If the bullet speed is over 2800 fps 180x bullet diameter squared/ bullet length = twist, if speed is below 2800 replace 180 with 150.
    This (the greenhill formula) and works for any copper and lead core bullet. Sometimes a bullet starts out stable but as speed drops precession sets in and no hits on target.
    Ha ha. I think you will have @Ginga lost with the first function.
    The range of what we think and do is limited by what we fail to notice. And because we fail to notice that we fail to notice, there is little we can do to change; until we notice how failing to notice shapes our thoughts and deeds

  11. #11
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    Ho ho jimmy!

  12. #12
    Member Marty Henry's Avatar
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    If he was an "islander" he'd have enough extra fingers to work it out, the rest of us have to use a calculator.
    Shootm likes this.

  13. #13
    Member viper's Avatar
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    Quote Originally Posted by Marty Henry View Post
    If he was an "islander" he'd have enough extra fingers to work it out, the rest of us have to use a calculator.

  14. #14
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    Rightio gentlemen and kiwijames. My calcs give me 8.17 assuming no less than 2800fps so as always I'm on the edge. Length of bullet used was 1.105 inches. Sound right?

  15. #15
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    i've got 0.9 inch on Strelok data base

 

 

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