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Old September 25, 2013, 04:23 PM   #1
jwrowland77
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Dimensions of a Grain of Powder

I was just sitting here wondering if there was a list out there with the dimensions of certain powders.

Just a random thought for the day.
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Old September 25, 2013, 05:37 PM   #2
WWWJD
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First thing that comes to mind is Lee's Powder Density Charts:

http://leeprecision.com/cgi-data/instruct/AP1704.pdf

VMD / CC..

I did some testing with my powder measure and scale. Numbers never did match what Lee has listed.
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Old September 25, 2013, 05:57 PM   #3
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Dimensions of a Grain of Powder

There is a book of Propellent articles from Handloader mag. It describes the dimensions of each powder but not in one list.
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Old September 26, 2013, 01:31 AM   #4
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Quote:
There is a book of Propellent articles from Handloader mag. It describes the dimensions of each powder but not in one list.
That's about as good as it gets, besides doing some really specific and in-depth internet searches.

The information is available online; but I've never seen it compiled in one place, or in a useful format.
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Old September 26, 2013, 04:16 AM   #5
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OK, I am back home so I can give details on the book I referred to above.

"Propellant Profiles, Fifth Edition"
Wolfe Publishing Company (same as Handloader magazine)

As an example,
Quote:
Universal is a single base, extruded powder. Its nominal length is .010 inch, its diameter 0.43 inch. Its bulk density is .630 gr/cc, and its color is beige, suggesting a lack of graphite coating. For users of the Lee Precision Auto-Disk powder measure, its VMD (volume measuring density [sic]) is .1099
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Old September 26, 2013, 05:10 AM   #6
jwrowland77
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Quote:
Originally Posted by NWPilgrim View Post
OK, I am back home so I can give details on the book I referred to above.

"Propellant Profiles, Fifth Edition"
Wolfe Publishing Company (same as Handloader magazine)

As an example,


That's EXACTLY what I'm looking for. Awesome, thanks!!!
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Old September 26, 2013, 09:21 AM   #7
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Universal is a single base, extruded powder. Its nominal length is .010 inch, its diameter 0.43 inch.
How can any cartridge less than 45 caliber get that near half inch diameter wafer in the case neck?
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Old September 26, 2013, 11:16 AM   #8
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How can any cartridge less than 45 caliber get that near half inch diameter wafer in the case neck?
Stack them in the case like Nekko wafers. For smaller cases, like .25 ACP, you align it on the top of the case and push it in with a little dowel, kind of like a coffee filter.
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Old September 26, 2013, 12:00 PM   #9
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DO NOT CONFUSE the word "granule" with the word grain which is weight not dimensions.
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Old September 26, 2013, 12:02 PM   #10
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Quote:
Quote:
Quote:
Universal is a single base, extruded powder. Its nominal length is .010 inch, its diameter 0.43 inch.
How can any cartridge less than 45 caliber get that near half inch diameter wafer in the case neck?
Simple. With an Acme Smokeless Powder Grinder. Endorsed by Wile E. Coyote. Power adapter extra.
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