powder for VLD 190 gr in 300WM

Discussion in 'Reloading' started by dmax1800, Sep 1, 2013.

  1. dmax1800

    dmax1800 Well-Known Member

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    I want to try some 190 grain Berger VLDs in my 300 win mag with a 26" barrel. I've got H1000, IMR4350, IMR4831 and IMR4320. I'm using WLRM primers and Norma brass. I can't load very close to the lands because of the blasted ejector on my Winchester model 70. Which 1 or 2 powders would you start with?
    Thanks.
     
  2. Broz

    Broz Well-Known Member

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    H-1000 or H-4831 Note the H.

    Jeff
     

  3. trailrider121

    trailrider121 Well-Known Member

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    H1000 works very well...
     
  4. MagnumManiac

    MagnumManiac Well-Known Member

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    H-1000 may turn up some good accuracy, but my rifle found it hard to digest on changing days in regard to weather, it also exhibited changing velocities day to day. Looked good to start with, but fluctuated too much for me to continue with it.
    I got my very best results with RE25, in accuracy and velocity, the velocity was an eye opener, by far faster than any other powder I tested and the most consistent. I had ES's of 8 with 208gr A-max's and ES' s of 11 with Nosler 190gr HPBT's.
    If you can get some, give RE25 a try, you may be surprised with it's accuracy.

    Cheers.
    gun)
     
  5. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

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    H1000 none better
     
  6. Broz

    Broz Well-Known Member

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    Interesting results. Exactly 100% opposite from what I find with H-1000.

    May I ask your brand of chronograph used?

    Thanks
    Jeff
     
  7. jfseaman

    jfseaman Well-Known Member

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    If it were me, and I had to choose from what I had: IMR4831.

    I believe your better choice is IMR7828 but that's what I like in long skinny magnums like 300WM.

    As for COAL vs lands. Berger gives some guidance on this now. The 'rule' was .010 into the lands and that worked for me on my first VLD load exactally as predicted.

    now

    Berger has issued guidance that has suggestions of .010 off, .040 off, .080 off and .120 off but check that. It's posted on this web site here: http://www.longrangehunting.com/for...accuracy-berger-vld-bullets-your-rifle-40204/
     
  8. johnnyk

    johnnyk Well-Known Member

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    I used H1000 with CCI 250's and the 190gn SMK and it was unbelievably accurate at 79.0gn. Velocity averaged 3078fps in my 26" Savage barrel. ES was 7.83 and SD was 4.12. The group measured .142"! My jaw hit the dirt.
    I had finally decided to try H1000 and had been doing load development the previous day. I could not for the life of me get it to group, but I was using the CCI BR2. As soon as I slipped those magnum primers (CCI250) in the equation it came together!
    I took it up to 80.5gn and velocity averaged 3145fps. The ES and SD was not as good, but accuracy was still .4185". Anything under 1/2 MOA is a good LR load IMO. Good luck. JohnnyK.
     
  9. livtoohunt

    livtoohunt Well-Known Member

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    I agree with H1000, H4831, and do not over look Ramshot Magnum!
     
  10. Spuds

    Spuds Well-Known Member

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    Another vote for H1000. I've developed several loads for different 300 Win. rifles using 180 - 190 gr. bullets, and I always end up with H1000.