The scoop on the Berger 300gr Hybrid

Discussion in 'Long Range Hunting & Shooting' started by Shawn Carlock, May 18, 2010.

  1. Shawn Carlock

    Shawn Carlock Sponsor

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    Here is what I found testing the new 300 gr Berger Hybrids.

    SPECS vs. SIERRA MATCHKING

    ...........................................SMK .....BERGER

    OVERALL LENGTH ........... .1.718” 1.824”

    BARING SURFACE ............. .649” .571”

    DIAMETER MAX BARING... .3385” .3385

    DIAMETER MIN BARING ... .3385” .3381”

    BARING SURFACE ES............ .019” .006”

    BASE TO FORWARD BARING .897” .891

    BOAT TAIL LENGTH ............. .240” .316”

    OAL RELATIVE TO LANDS..... .000” +.126”

    WEIGHT AVE.................... 300.0 gr 300.2 gr


    NOTES:

    BERGER 300 GR HYBRID

    OAL IN CANYON RIFLE # 0051 - 3.000” W COMP #1 TO LANDS OR 3.920” OAL STANDARD 338 EDGE CHAMBER

    HEAD SPACE OF FIRED CASE 3.019” W GAUGE

    LOADED TO AN OAL OF 3.000” W COMP # 1
    H1000

    90.0 GR 2801 FPS
    91.0 GR 2812 FPS
    92.0 GR 2861 FPS
    93.0 GR 2873 FPS FAINT EJECTOR MARK, SHOT WELL
    94.0 GR DNS
    95.0 GR DNS
    96.0 GR DNS


    +P TEST RIFLE – OAL to lands 3.268” or OAL of 4.200”, barely in the neck of the case
    Loaded: H1000 an OAL w comp # 1 to 3.267”
    95.0 gr. 2807 fps
    96.0 gr. 2824 fps
    97.0 gr. 2849 fps
    98.0 gr. 2892 fps
    99.0 gr. 2930 fps
    100.0 gr. 2969 fps
    101.0 gr. 3003 fps faint ejector mark
    102.0 gr. 3030 fps visible ejector mark but bolt not sticky

    Loaded 101 gr for test, accuracy was horrible 3-4” at 100 yards. ES 12 fps and 3003 ave velocity.
    Loaded 96.0 gr and shot 3/8” at 100 yards
    Loaded 100 gr and shot < 3/8” with 1-11 twist +P Krieger barrel at 3052 fps
    Loaded 101 gr and shot <1/2 moa at 100 yards with + P and 300 SMK’s

    Final Notes:

    The Berger bullet seems to be a great bullet in terms of accuracy and actually shoots a little faster than a 300 gr SMK in all applications tested (total of 5 rifles).

    Bullet design generated less peak chamber pressure and seemed to require slightly more powder to achieve the same velocity as the 300 SMK. At the same relative pressure the Berger shot 30-45 fps faster.

    At velocities below 2900 fps twist rates of 1-9, 1-10, 1-11 shot well. At velocities above 2900 fps 1-10 and 1-11 shot well, however the 1-9 twist was just plain nasty. In the 1-9 twist test rifle that shot so poorly at 3003 fps the powder charge was reduced to a level of just under 2900 fps and shot the best groups of the day. It is quite clear that you can twist this bullet too fast at a certain velocity threshold. If I was building a rifle capable of driving the bullet over 3000 I would not go with a faster twist than 1-10 and would lean toward a 1-11 twist.

    A note on transonic / super sonic range and twists - for sure the 1-11 will not shoot worth a damn when the bullet go near or into the transonic range, it is possible that no amount of twist will help this. The positive note is that if you drive the bullet 3000 fps that the transonic boundry is around 2700 yards given reasonable atmospheric conditions.

    I believe that this bullet has huge potential and I am looking forward to serious long range testing in the future with it.
     
    Last edited: May 19, 2010
  2. jwp475

    jwp475 Well-Known Member

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    excellent report Shawn, thanks..........
     

  3. Down Under Hunter

    Down Under Hunter Well-Known Member

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    Many thanks SC for that. Sounds like it could be a killer bullet !

    DUH
     
  4. Gnome!

    Gnome! Well-Known Member

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    Super report there Shawn :) I think this one will make for good competition against the SMK's.
     
  5. B23

    B23 Well-Known Member

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    Great post!!! Now if I was only smart enough to be able to apply all that information to good use. :)
     
  6. SHRTSHTR

    SHRTSHTR Well-Known Member

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    Shawn, great writeup as usual. It seems your getting some really good velocities with the Hybrid. I am having my gun re-chambered to 338 LAI. The barrel is 30" Lilja w/1-10 twist. Hoping to hit 2900fps with H1000 but won't complain if I get a little more.
    I have 250 Bergers just waiting for the rifle now. :)
     
  7. jmden

    jmden Well-Known Member

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    Thanks for your research and input, Shawn. Please keep informed with any new info.
     
  8. pyroducksx3

    pyroducksx3 Well-Known Member

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    I've looked around and cant find it. What is the BC for this thing anyway?
     
  9. dirtball

    dirtball Well-Known Member

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  10. Oliveralan

    Oliveralan Well-Known Member

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    What is a +P rifle? Are you using a differnt reamer? Stronger action? 3000fps in an Edge... Wow!

    Great write up!
     
  11. Chas1

    Chas1 Well-Known Member

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    +1 w/B23. Nice testing and write up. Thanks Shawn.
     
  12. mike33

    mike33 Well-Known Member

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    Shawn , I have a 9.3 twist worth a try?
    Mike
     
  13. Shawn Carlock

    Shawn Carlock Sponsor

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    In my 9.3 twist the Hybrid shot very well as long as you didn't break 2900 fps, as soon as I did accuracy went totally to crap and stayed there.

    The +P version is something we have been working on and testing, we hope to release it this summer. Sorry but that is all the details I am releasing about it right now.
     
  14. Autorotate

    Autorotate Well-Known Member

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