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Thread: Twist Rate

  1. #1
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    Twist Rate

    Does anyone know the twist rate of a 1970's Steyr Mannlicher Model M in 6.5x55. Have emailed Steyr Arms but had no reply.

  2. #2
    Member wsm junkie's Avatar
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    Easiest way is put a cleaning rod down it with a brush, mark the rod at the muzzle, pull the brush through until the mark is on top again and mark it again at the muzzle then measure the distance between the 2 marks.

  3. #3
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    Thanks for that but the rifle is locked away in a mates safe who is away for a few weeks. I was wanting to get some powder/projectiles sorted to best suit the twist rate as I believe there are several and and can shoot between 80-160 grainers.

  4. #4
    Member stug's Avatar
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    My guess would be 1:8"

  5. #5
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    @Fireflite - if they follow the original M96 6.5 X 55 Swedish specs, it may be 1:7.5 twist.
    My old milsurp M96 had this twist rate - a rifle I should've kept, but being 'young and stupid' at the time (45 years ago), sold it for $100.
    Stug could be correct as well, modern powders may prove that a fast twist like this isn't needed, but I'd suggest that anything other than original spec., is a custom barrel.

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    Thanks @wsm junkie @stug and @WallyR

  7. #7
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    I think 8.6 I read it somewhere.

  8. #8
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    Thanks @nor-west

  9. #9
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    Military twist rate is 1 in 200mm (1 in 7.87 inches). European manufacturers appear to have settled on a twist rate of 1 in 220mm (1 in 8.66 inches) for 6.5x55 SE sporting rifles at some time in the 1960s, if not earlier. BSA CF2 rifles use the 1 in 8.66 twist rate, as do CZUB rifles. If I recall correctly, I have also seen that twist rate quoted on the Voere web site.
    A good shot at close range beats a 'hit" at a longer range.

 

 

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