OT Pyrodex question

    --Well I've determined that a good load for my cannon is 50cc of Pyrodex, F grade. Now what would that equate to in Grains? Couldn't seem to
locate a conversion on google...
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Hacking the Trailing Edge! : rock and roll...
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"steamer" wrote: (clip) Couldn't seem to locate a conversion on google... ^^^^^^^^^^^^^^^^ You're converting a volume to a weight, so you need to find the density of Pyrodex,
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AFAIK, Pyrodex is equivalent to black powder on a weight-to-weight, Grain size (F, FF, FFF) basis. Weigh the 50cc charge of Pyrodex and express the result in pounds (decimal part of a pound, actually). Multiply the result by 7000 which is the number of grains to a pound.
Bob Swinney

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Robert Swinney wrote:

Pyrodex is a 1 for 1 substitute for blackpowder, based on volume. Substituting an equal weight of Pyrodex for blackpowder could be dangerous.
R, Tom Q.
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On Thu, 17 May 2007 20:26:47 -0400, Tom Quackenbush

Correct.
Gunner who shoots both BP and Pyrodex
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steamer wrote:

Anyone got a Lee powder dipper set? The dippers are in cubic centimeters, so a weight per cc extrapolation can be made off the chart that is in the kit.
Viola! http://www.thefiringline.com/forums/attachment.php?attachmentid 383&d52733123
See if that works. Found it here http://www.thefiringline.com/forums/showthread.php?t !6098
Cheers Trevor Jones
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Trevor Jones wrote:

http://www.thefiringline.com/forums/attachment.php?attachmentid 383&d52733123

DoH!
No Pyrodex F on the chart.
You could just take a full can of Pyrodex, and see how many charges that would make with the 50cc measure.
Cheers Trevor Jones
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Probably because you are mixing volume and weight. cc is volume and grain is weight.
Paul
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steamer writes:

Specific gravity of Fg black powder measure is about 0.98.
50 cc * 0.98 gram/cc = 48 grams = 741 grains.
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On Thu, 17 May 2007 00:22:37 -0500, Richard J Kinch

Pyrodex is 0.75 gram/cc. http://www.hodgdon.com/pyrodex/pyrodex-msds.php
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6000 grains in a pound. CC is volume measurement, not weight.
Gunner
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7000 grains to a pound. Watch that touch typinh.
Ws
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On Thu, 17 May 2007 10:03:47 -0400, snipped-for-privacy@lycos.com wrote:

yup..only missed it by one key..sigh
Gunner
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More importantly, how does one make a cannon on a lathe? Seen the price of brass lately?
John
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First you collect brass scrap for a long time. Second you build a furnace to melt the brass and make a casting. Third you make a cannon on a lathe.
Those with big bank balances can skip directly to step 3.
Wes
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    Would bronze not be a better choice than brass for a cannon? I would not really trust brass with anything near a full load. So, if you are starting with brass scrap, you'll have to figure some way of separating out the zinc, and then adding the proper amount of tin instead, which will also run the price up.
    I would consider brass appropriate for a decorative cannon which lacked some necessary thing to allow it to be fired - like no touch hole and not bored nearly deep enough to let one meet anyway if someone did try to drill a touch hole on their own. :-)

    :-)
    Enjoy,         DoN.
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Use the brass for decoration on the outside of the Bronze cannon. Make brass cannon ball - pretty stack. Brass turns green and puffs up. Bad. Stick a ball in a puff up and boom goes the barrel.
Bronze was used on many of the sailing ships for a very long time ago.
Martin Martin H. Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net TSRA, Life; NRA LOH & Endowment Member, Golden Eagle, Patriot"s Medal. NRA Second Amendment Task Force Charter Founder IHMSA and NRA Metallic Silhouette maker & member. http://lufkinced.com /
DoN. Nichols wrote:

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Bulk density of Pyrodex is 0.75 grams/cc. 50 cc would therefore be 578.7 grains.
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On Thu, 17 May 2007 11:26:14 -0500, Don Foreman

Now is that the same for Priming, R/S or Cannon?
Lots of empty spaces in 50 CCs of Cannon, damned few with Pistol
Gunner
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Good point, Gunner ! Whaddaya say, Don ? BTW, good to see you again on RCM.
Bob Swinney
wrote:

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