Berger 7mm 184 Bullet??

Discussion in 'Big Stuff -- 6.5mm, 7mm, 30 Cal' started by BIGMAC, Jan 29, 2019.

  1. Kurt Blasser

    Kurt Blasser Gold $$ Contributor

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    Thanks! Would you happen to have a COAL for the 180 VLD's say at touch or 20 off?
     
  2. david kieffer

    david kieffer Gold $$ Contributor

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    this is something you need to do for yourself for your rifle. different lots of bullets will be different, reamers not perfect head space ect. I use the oal gauge .many other ways to find your length to lands ,if your new to this youtube might be a help.good luck. dave
     
  3. Kurt Blasser

    Kurt Blasser Gold $$ Contributor

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    Dave, Understand this. Have to send fired cases to get threaded cases for oal gauge. Did Wheeler technique for distance to lands, but seems like bullet pretty deep. Just looking for a general comparison to what I'm seeing.
     
  4. rardoin

    rardoin Silver $$ Contributor

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    Overpressure would not be an issue unless you are running a tight necked chamber with minimal brass clearance. If you have a SAAMI/near SAAMI and .003+ clearance between brass/chamber in your neck the worst that might happen is inconsistent grouping.
     
  5. david kieffer

    david kieffer Gold $$ Contributor

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    kurt , I make my own modified cases very easy to do. all you need a 5/16 x 28 tap ,I think it's 28 maybe 32 tpi can someone please verify . it's best to use a fired case from your chamber. another easy solution would be take a fired case and just partily size 1/4 -1/3 of the neck or less just enough to hold the bullet but still slide . or make 2 slits @ 180 degrees with a dremmel tool. another method I don't care for but some do would be seat a bullet long, paint it with marker or dikem chamber it remove and look for land marks on ojive continue to seat deeper till no marks are visable . hope this helps . dave
     
  6. Kurt Blasser

    Kurt Blasser Gold $$ Contributor

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    Thanks Dave. If I'm necking up will this cause the donut?
     
  7. rardoin

    rardoin Silver $$ Contributor

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    You will 'recruit' brass from the thicker shoulder area into the neck when a case is necked up. This will cause a 'donut'. If you can keep the bearing surface above that area it will not influence your load...regardless of where the boat tail extends (short of having a very long boat tail that is compressing the powder column).
     

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