berger vld's....wtf???

berger vld's....wtf???

This is a discussion on berger vld's....wtf??? within the Cartridges & Calibers forums, part of the Sniping Related category; for the love of god...idk why but the differnace from the Sierra match kings to the berger vld's is night and day.... for some reason ...

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  1. #1
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    berger vld's....wtf???

    for the love of god...idk why but the differnace from the Sierra match kings to the berger vld's is night and day.... for some reason i cant get them to shoot out of my rifle...

    46.7 gr BLC2
    cci bench rest primer
    winchester case....
    great for the 168 match king.... no load with the blc2 works for the vld....

    any ideas????

  2. #2
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    How deep in the case are you seating them.

    and how far off the lands are you.


    Rule of thumb berger likes anything past 200 yards to settle down.

    and like being in the lands over the case



    Tom

  3. #3
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    humm...

    here is what i do.... its very redneck engineered but works for me b4....

    thread a empty case...
    turn the inside of the case so the bullet has some resistance...
    paint a bullet with magic marker
    attach empty case with painted bullet to "seat depth tool??"
    push the rod that pushes the bullet out of the case untill resistance occurs...
    remove case
    measure overall case with bullet length
    set die to match....

    when ever i go to a new bullet this is EXACTLY what i do... i knwo that the bullet is sittin on the lands and groves...

    unless i did somthing wrong...

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  5. #4
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    Re: berger vld's....wtf???

    Bud, go easy, and don't get all into a fluster so much. You just need to adjust your jump, and may need to jam a little. If you don't have the tools to measure this, then either get them, (I recommend the Sinclair Seating Depth Tool) or don't shoot VLD bullets. Plain and simple, they WILL NOT shoot if they are jumping the wrong distance, and you had better be able to quantify that. When VLD's work...they shoot like a house on fire. When they don't..well, a shotgun pattern comes to mind. And Tom's right: many times these bullets will only shoot maybe MOA at 100...but then settle down and still group into an inch at 300. This is good medicine, but it doesn't come with just a credit card number and a brown truck.

    The more aggressive secant ogive design of VLD-type bullets (any, not just Berger) does not self-center in the leade of the rifling as well as a conventional, and less agressive tangent ogive like the Sierra MK uses.

    There are tradeoffs to either design. SMK's and the like tune easily, but give it up in the wind; VLD's, some AMAX, etc. are aweful to make shoot, and keep them shooting as the barrel wears, but they are sure nice in a 20 mph breeze.

    Nothing's free.
    -Nate
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  6. #5
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    alright... so is it better to have the vld sittin on the lands and grooves... or slighltly free bore?

  7. #6
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    I've recently settled on the Berger 190s out of my 308. I seat them magazine length and they shoot just great.
    Berger bullets don't have to be seated into the lands to shoot well. They will shoot with some jump.
    Eric from Berger has an article on this at this address.

    http://www.longrangehunting.com/article ... racy-1.php
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  8. #7
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    ,,,

    thats another question... my sps varmit is 1-12 twist..... what gr would be better suited for that?

  9. #8
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    It really depends on rifle and throat angle. For shallower throats < 2° they need to be closer to the rifling or in the rifling, for steeper ~2.5° there is wider tolerable area from lands...

    Today i'm doing exactly this type of testing on GS Custom solids which have extremely secant ogive (more of a cone than curve )...

    But i think Berger has on their site an instruction of how to work up a load for them and that starting load should be done touching or with a slight jam.

  10. #9
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    wow...

    see this is why i love this site.... after playing with the bullet seat depth.... 47 grains of blc-2 and the 150 gr VLD...... you were right.... they are amazing...where i went wrong is, i was set up for the taper on the SMK's........thanks for the input everyone

  11. #10
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    Well that's excellent, I'm glad to hear they're working out. If, after a few hundred rounds, they start to not group as well, check your chamber again, and adjust the seating depth out to "chase the throat" as it erodes.

    Maybe you've already done this, but now that you have a load that shoots reasonably well, try adjusting the seating depth up and down by 0.005" at a time, running a ladder test to see which seating depth groups the best. After you find that, repeat the ladder test, but make the change 0.001" per group.

    This is where it gets persnickity. :P

    -Nate
    NRA A2 Service Rifle High Master XTC
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