Berger 338 300 gr otm max stability

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by jmason, Apr 4, 2014.

  1. jmason

    jmason Well-Known Member

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    Does anyone out there know if the 300 grain 338 OTM's will tolerate being driven at about 3400 ft./s?

    No speculation please!
     
  2. Broz

    Broz Well-Known Member

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    Going to be limited input, so I will offer what I have. They are doing great from a 10 twist at 3200 in my rifle.

    Jeff
     
  3. barnesuser28

    barnesuser28 Well-Known Member

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    IIRC, kirby tried to destroy them in a 338 AM, very hot loads and a ton of rounds down a very hot bore. They held up fine.
     
  4. Kiwi Greg

    Kiwi Greg Well-Known Member

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    The 300 Elite Hunters coped fine at 3500fps in my 338 DCM 36" 1-10 twist

    The OTM jackets are thicker so they should handle it just fine :)
     
  5. jmason

    jmason Well-Known Member

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    Thanks boys I appreciate it!
     
  6. jmason

    jmason Well-Known Member

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    greg what powder are you guys running? Looks like your getting about 25 fps per inch of extra barrel on me. Your DCM is similar to what I'm shooting.

    It's interesting how much bad information is out there on this case!
     
  7. Kiwi Greg

    Kiwi Greg Well-Known Member

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    I settled on 20N29.

    I have noticed I can't get the same performance from a different lot of brass with my 375 DCMs, so it looks like my first lot brass is harder than the current lot.

    This is the same "harder" brass that I use with 338 DCM.