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Thread: Powder comparison tables?

  1. #1
    Boolit Mold

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    Powder comparison tables?

    I'm sure that if I search this forum long enough I'll find the answer to my question but it's late, I'm tired and grumpy, and since this is my first post maybe I won't have to endure too many barbs.

    Now, my question: Where can a guy find information on burn rates and comparisons of the various powders? I had been using bullseye and switched to 231 when I couldn't get any bullseye. Now it seems that the supply of 231 has dried up

  2. #2
    Boolit Master

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    john, just use Google search and type in " powder burn rate charts". You will get a bunch of site with charts......dale

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    Hp38 is the same stuff as ww231 if you can find it. NOT just close, comes from the same hopper.
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    Welcome aboard Chaplainjohn.


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  5. #5
    Boolit Master Slow Elk 45/70's Avatar
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    Hullo Chaplinjohn, +1 on the google search, welcome and good luck.
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  6. #6
    Boolit Master

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    Welcome to the forum Chaplinjohn! Wiljen is correct about Hodgon HP38 being the same as WW231 so keep an eye out for it as it is not as popular as WW231 is for some reason and might be some left on the shelves. I picked up two 1 pounders the other day that way.
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  7. #7
    Boolit Master


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    RCBS loading manual has one in the section called"Powder", most of the manuals have them. Red Dot is close to Bullseye.

  8. #8
    Boolit Master Lead Fred's Avatar
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    Funny part is there are 3 different burn rate charts on the internet.
    All are close, but slightly out of order.
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  9. #9
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    Close because there are different lots for the same powder designation. The bad part about the tables is there are no demarcation lines between "like" application speeds. An example, there is a large difference in speed between BlueDot and 2400. There is only one powder, namely WW630, that is exactly between them, and it is now defunct, leaving a serious hole in the tables. No tables "show" this as a hole. ... felix

    Another hole created as of late is the movement of RL7, initially a 5 percent nitroglycerin content and now a 10 percenter. The speed of the initial version was a very fast 3031, and the current version is very close to 4198. That is a significant difference for the 30-30 capacity case. The advantage of the movement is that now RL7 can be used in the straight wall pistol cases, and is about 3 grains within WW680 which is going by the wayside. ... felix
    Last edited by felix; 02-01-2010 at 03:18 PM.
    felix

  10. #10
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    Quote Originally Posted by felix View Post
    Close because there are different lots for the same powder designation. The bad part about the tables is there are no demarcation lines between "like" application speeds. An example, there is a large difference in speed between BlueDot and 2400. There is only one powder, namely WW630, that is exactly between them, and it is now defunct, leaving a serious hole in the tables. No tables "show" this as a hole. ... felix

    Another hole created as of late is the movement of RL7, initially a 5 percent nitroglycerin content and now a 10 percenter. The speed of the initial version was a very fast 3031, and the current version is very close to 4198. That is a significant difference for the 30-30 capacity case. The advantage of the movement is that now RL7 can be used in the straight wall pistol cases, and is about 3 grains within WW680 which is going by the wayside. ... felix
    Which chart did that come from? The Blue Dot, 2400 thing.

    http://www.reloadbench.com/burn.html
    http://www.hodgdon.com/burn-rate.html
    http://home.hiwaay.net/~stargate/powder/powder.htm
    http://www.ramshot.com/powders/burnrate.php
    http://www.reloadersnest.com/burnrates.asp

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  11. #11
    Boolit Buddy testhop's Avatar
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    chaplianjohn
    graf has bullseye in stock
    and welcome aboard

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  12. #12
    Boolit Master on Heavens Range
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    Jimkim, what you see is NO demarcation line in each of those charts. So, all of the charts are valid as for as a listing of powders in sequence. In other words, any one listed between BlueDot and 2400 are either closer to BlueDot or to 2400, leaving a wide hole between the latter two. ... felix
    Last edited by felix; 02-01-2010 at 07:04 PM.
    felix

  13. #13
    Boolit Master HORNET's Avatar
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    As a cautionary note, part of the reason for the differences between the charts is that the relative speeds can vary depending on the application. Not all the charts were tested using the same test protocols and your results can very easily vary. Start low and work up ALWAYS even if you can find published data.
    BTW, there was a warning about Blue Dot in some applications a couple of months ago....
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  14. #14
    Boolit Master
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    Thanks Felix. I've often wished for a chart with a burn meter, but I fear that would be close to impossible. I do like how Ed Harris and others can quote percentages. A chart with the relative percentages(Blue Dot is X% slower than Unique) would be good, but where would you start?

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  15. #15
    Boolit Mold

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    I thank all who replied. I've been reloading for some time but there has been a fairly long gap between the first group of years at it and my recent restart (about 18 months ago). I've used up all the old supplies and am trying to find replacements. What with fixed income, replacement costs and the fact that I have less time for casting Boolits now than I did when I was working for a living it is getting tough.

    I have to admit that when I read the first post I had to slap myself in the forehead and say "DUH!"... What can I say?

    To those who weighed in with the warnings... Thank You, they are duly noted.

    I'll be lurking around in the background for a while taking Mr. Lincoln's advice relative to "It being better to keep ones mouth shut and be thought a fool than to open it and remove all doubt."

    With that I'll say "Blessings",
    Chaplain John

  16. #16
    Boolit Master KYCaster's Avatar
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    Quote Originally Posted by ChaplainJohn View Post
    ... I have less time for casting Boolits now than I did when I was working for a living...
    Chaplain John

    So tell us John, how did you find time for retirement????

    Welcome to the madness!!!

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  17. #17
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    Quote Originally Posted by felix View Post
    Close because there are different lots for the same powder designation. The bad part about the tables is there are no demarcation lines between "like" application speeds. An example, there is a large difference in speed between BlueDot and 2400. There is only one powder, namely WW630, that is exactly between them, and it is now defunct, leaving a serious hole in the tables. No tables "show" this as a hole. ... felix

    Another hole created as of late is the movement of RL7, initially a 5 percent nitroglycerin content and now a 10 percenter. The speed of the initial version was a very fast 3031, and the current version is very close to 4198. That is a significant difference for the 30-30 capacity case. The advantage of the movement is that now RL7 can be used in the straight wall pistol cases, and is about 3 grains within WW680 which is going by the wayside. ... felix
    Felix,

    Maybe you would like to peruse the burn chart included before you decide where the burn rate of WW630 is.

    Joe

    http://www.gswagner.com/bigreloading...rburnrate.html

  18. #18
    Boolit Master



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    Which one to use?

    Which chart did that come from? The Blue Dot, 2400 thing.

    And I will add another.
    http://www.vihtavuori-lapua.com/pdfs...Rate-Chart.pdf


    So, which one do you use? They seem to vary slightly. It would be nice if there was an industry standard for burn rate measurement. Like, When a standard amount of powder "Z" is burned, it fills "x" standard volume at "y" rate and to "p" pressure (in psi). And then publish what the standards are so that we can use that for our own choices for reloading.


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  19. #19
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    It would be nice if they'd do that Jim, the problem is, powders behave differently under differing conditions so no single set of conditions would be valid for all applications. Maybe if they could make several charts using standards (example) cartridges this would be useful.
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  20. #20
    Boolit Master


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    Felix, I think Accurate Arms is making a version of 630

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