H-1000 lot variation

Discussion in 'Reloading' started by CA48, May 23, 2012.

  1. CA48

    CA48 Well-Known Member

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    The last time I got an 8 lb jug of H-1000 (2011) I had to drop 1 gr to get my existing velocity and accuracy back. I am going to have to get another jug soon. What is the best method of regaing back my accuracy from powder lot variation. Matching velocity seemed to work last time, is there a better method.

    Thanks, Chase
     
  2. jsthntn247

    jsthntn247 Well-Known Member

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    I'm due for another jug of Varget and H1000 myself, sure hope I don't have to do more load development. I'm interested in this thread myself.
     

  3. durak

    durak Well-Known Member

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    Last month I finished the last of my H1000 that I bought 4 years ago - My best load was at 87 grains - Last week I bought a new jug and started shooting - I had to lower 1 gr to match what I had with my old jug - all is well...
     
  4. LRSickle

    LRSickle Well-Known Member

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    I was going to ask this very question last week! I just ran out of H1000 and while working back up to my original velocities with my new lot, I had to stop at 91gr instead of 92gr. I wanted to get back to my original velocity so I didn't have to redo my programs and verify my drops again. Seem to be the way to go.
     
  5. CA48

    CA48 Well-Known Member

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    LRSickle, did you get your accuracy back as well as your velocity?
     
  6. green 788

    green 788 Well-Known Member

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    matching velocity should work if you're talking about the same outside temperatures... I know H-1000 is "extreme" rated, but even then powders can vary a bit with temp swings.
     
  7. wc872

    wc872 Well-Known Member

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    While this may not be for everybody it works for me. I take a guess at how many rounds the barrel will be good for & buy enough powder to wear out the barrel. I buy two 8 pounders even they are different lots I mix them together. At the end of the day I have 16 lbs. of powder with the same characteristics. I then proceed to add to Global warming one round at a time.
     
  8. LRSickle

    LRSickle Well-Known Member

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    Yes I did. I've run three different lots of H1000 in this barrel and each time, (from looking back at my records) I match the velocity I find that accuracy node.
     
  9. LRSickle

    LRSickle Well-Known Member

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    Dan, I've noticed some of my powders are temp sensitive (RL22!) but not so much with the H1000. But I have noticed a noticable change with each lot of H1000.
    You have a good point. If you work up a load at an ambiant 50* then you should work up your next lot as closely to 50* as you can.

    By the way Dan, I sure enjoy your website.
     
  10. Greyfox

    Greyfox Well-Known Member

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    This is an issue with both h1000 and Retumbo. I found that I was able to match my velocity/drop data by dropping 1.5 gr. In my 6.5x284. My accuracy and pressure signs were the same at the higher velocity but I adjusted lower because I use calibrated turrets. I wish I had bought larger quantities of powder initially.
     
  11. Topshot

    Topshot Well-Known Member

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    Can someone give me the batch number of the hot batch?
     
  12. Mikecr

    Mikecr Well-Known Member

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    I follow WC872 in a sense.
    I buy powders where there is plenty in-lot.
    If it works out well, I immediately buy enough of that lot to last the barrel's life.
    I do the same with brass.

    I must have 100lbs of a slower lot of IMR4350, because it just works so well for me.
     
  13. CA48

    CA48 Well-Known Member

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    LRsickle good to know, and like many have mentioned in the future I will get enough loading components for my barrels approximate life span.
     
  14. LRSickle

    LRSickle Well-Known Member

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    This is my latest lot of H1000 which is noticably faster than my last.
    1031612
    5051