Barrel length and twist question

Discussion in 'Long Range Hunting & Shooting' started by Rainy, Apr 15, 2019.


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  1. Rainy

    Rainy Member

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    I have an older model 300wby vanguard that I’ve customized and wanting to get a new barrel soon. The load I’ve worked up and am use to is 150grain Nosler Accubond that travels in the realm of 3,400fps. I’ve been doing a lot of research and reading other posts in here, but only find recommendations for larger bullets. I’m wanting to go with 26-28” barrel, but clueless as to what twist. Can you guys school me on the differences in twist and barrel length please? Your help and advice is greatly appreciated!
     
  2. L.Sherm

    L.Sherm Well-Known Member LRH Team Member

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    Go with a 10tw it will be good all the way up to 215's
     
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  3. Rainy

    Rainy Member

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    Would you recommend 26” or longer?
     
  4. L.Sherm

    L.Sherm Well-Known Member LRH Team Member

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    26"
     
  5. Canhunter35

    Canhunter35 Well-Known Member

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    10 twist is standard twist for the 300wby. I don’t think you will have the magazine length to utilize anything longer than the 215s so I’d stick with 10tw and go 26”
     
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  6. CVCOBRA1

    CVCOBRA1 Well-Known Member

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    A threaded 26" You might want a brake someday.
     
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  7. Rainy

    Rainy Member

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    I have a break, and it’s much needed! Lol!
     
  8. MontanaRifleman

    MontanaRifleman Well-Known Member

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    I am familiar with the Vanguards. It's a good action but a little on the small size for heavy Long Range bullets in the mag. Your mag box is 3.50". I agree that a 215 Berger is a good choice for the 300 Wby round but the case is 2.85 inches long and the 215 is 1.598" meaning that you will have to bury 1" of bullet into your case. If you rechamber to 30 Nosler, slightly larger in case capacity with a case length 2.556, you will be able to put .9" of the bullet out with .6 " in. The 300 Blazer is 2.528 with the same capacity as the Wby. With that rifle cal combo, I would recommend a 10 twist
     
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  9. Rainy

    Rainy Member

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    Shooting 150grain accubonds
     
  10. MontanaRifleman

    MontanaRifleman Well-Known Member

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    Your OP seem to suggest you were considering larger bullets
     
  11. Canhunter35

    Canhunter35 Well-Known Member

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    the other option for mag length is an Aics bottom metal getting you 3.7”
    Or 300prc for shorter 300mag capacity
    If ur staying with 150s then just go with a 10twist and ur done
     
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  12. Gord0

    Gord0 Well-Known Member

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    I went with a 9 twist because I'm closer to sea level, and I would have went with an 8 if they had them. More twist isn't a bad thing. I'm running a 300wm. Your options are about endless in this case capacity range.
     
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  13. FEENIX

    FEENIX Well-Known Member

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    I went with 27" and 1:9" for my .30 LARA (right with 220 ELD-X) which is basically a .300 Jarrett Improved but I can still shoot the .300 WBTY (left with 180 SP).

    .300 WBTY vs .30 LARA.jpg
     
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  14. L.Sherm

    L.Sherm Well-Known Member LRH Team Member

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    It is if you start tearing bullets apart.
     
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