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Powder throw variance?

Discussion in 'Shooting Related Threads' started by Rich219, Oct 29, 2009.

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  1. Rich219

    Rich219 Active Member

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    What is an acceptable variance for throwing powder? If the die is meant to drop 15.7 grains and is dropping between 16 and 15.5 grains is this acceptable?
     
  2. short shucker

    short shucker TS Member

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    If you pull and release the lever a little smoother the drops will get more consistant.

    ss
     
  3. $$90-T$$

    $$90-T$$ Member

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    Don't know what your reloading on, but on a mec 9000 if the charge bar does not make it all the way to the left it will not be centerd properly to make consistent powder drops. Also could be static electricity. Good luck. Josh
     
  4. miketmx

    miketmx Well-Known Member

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    I use a PW loader and Red Dot or Green Dot which are bulky flake type powders that take up considerable volume for their weight. My powder drops are pretty consistent usually within 0.1 grain but a low volume fine grain very dense powder might be different. Some people ground their loading machine to prevent static electricity but I don't have to.
     
  5. Rich219

    Rich219 Active Member

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    I'm using a PW 800+ w/ e3 powder.
     
  6. $$90-T$$

    $$90-T$$ Member

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    If your loader isn't ground try that first. I went through that very thing until I ran a wire from my water pipe to my loader. Problem solved. I don't have any experience with PW but I'm sure others will have some good info. Josh
     
  7. Rich219

    Rich219 Active Member

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    I just got 3 or 4 throws in a row that were 16.5 grains so I'm walking away from the press tonight and will troubleshoot it in the morning.
     
  8. Old Doc

    Old Doc Member

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    Its not what the die or bushing is suppose to throw by a chart but what the bushing throws by a scale. The bushing can't read a chart. You can read a scale. Powder lots do vary. Put in another bushing or ream a bushing to get the desired weight of powder. D Winter
     
  9. Rich219

    Rich219 Active Member

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    Should the bushing be throwing loads that weigh almost 1 grain different? 15.5 vs. 16.5? I'll have to double check everything tomorrow morning.
     
  10. mrskeet410

    mrskeet410 TS Member

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    "If the die is meant to drop 15.7 grains and is dropping between 16 and 15.5 grains is this acceptable?"

    Good enough for me unless 15.7 gains is near max, then I'd probably drop back.
     
  11. Rich219

    Rich219 Active Member

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    17 grains is the max.
     
  12. cubancigar2000

    cubancigar2000 Well-Known Member

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    I gave up on E3 for several reasons and you are dealing with one of them
     
  13. Trap4

    Trap4 Member

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    To answer your question--Yes it is acceptable.

    Trap-4
     
  14. Dave P

    Dave P TS Supporters TS Supporters

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    Like Doc says, bushing drop charts are only a starting guide and always should be checked with a scale for accuracy. Exact drops are near impossible to get and variances under 1/2 grain are acceptable.
     
  15. esoxhunter

    esoxhunter Well-Known Member

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    I agree with most of the input. I load on a 366 and my 16 yard bushing throws, (on average), 17.5 grains of Promo. Last year I checked probably 25 shells in a row. The drops varied anywhere from 17.3 to 17.8. That's + or - a couple of tenths. Nothing to worry about. Ed
     
  16. JTEA

    JTEA Member

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    Check for wear on the rubber "O" rings or washers. More likely to wear on the shot side, but could be a factor. Make sure all screws, bolts that hold down charge bar assembly are tight or a gap could occur between bushings and powder bottle. JT
     
  17. mrskeet410

    mrskeet410 TS Member

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    esoxhunter - Check some more and there's a good chance you'll find them from 17.0 to 18.0.
     
  18. Neil Winston

    Neil Winston Well-Known Member

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    Rich219, it looks fine to me.

    Neil
     
  19. Trap4

    Trap4 Member

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    Again--hey guys 3 tenths of a grain does not make any difference--see the target --break the target.

    Trap-4
     
  20. Rich219

    Rich219 Active Member

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    I'm getting a digital scale tonight, my scale is VERY sensitive and this could have something to do with it. I will update this thread with my results tonight. Thanks.
     
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