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Blackpowder expiration date?

Discussion in 'Blackpowder' started by Zerstoerer, Apr 13, 2009.

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  1. Zerstoerer

    Zerstoerer Member

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    I am sure it has been discussed before -

    how long is Blackpowder in the can good for?
    What are these numbers on the bottom of a can of Goex?
    Is that an expiration date and if yes, what happens if it is exceeded?
    Thanks.
     
  2. Smokin_Gun

    Smokin_Gun Member

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    War Against Northern Aggression digs have found loaded revolvers and fired them off after 150 years.
    Just keep it air tight.
     
  3. armoredman

    armoredman Member

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    Wonder, does that also apply to BP subsitute, like Triple 7 or Pyrodex? Obviously none of those have been loaded that long! :)
     
  4. Sagetown

    Sagetown Member

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    So far my Pyrodex still works after I opened it some 15 years ago. Well; at least 10 years ago anyways.
     
  5. husker

    husker Member

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    dido sagetown. i just finished up a bottle of pyrodex that i bought in 1992. it sat till last year with about a 1/3 rd of it used. i think any type will out last any humane
     
  6. Jim Watson

    Jim Watson Member

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    Black powder gets better with age. Or maybe they used to make it better. I have an article about the .32 Winchester Special "factory smokeless, reload black" legend. It says fresh powder was disappointing but a can of pre WW I DuPont did quite well.

    Friends in BPCR tell me that Goex made some poor powder around 1999-2000 but have improved since; and that old lots were better, too. Said to be due to inferior wood being burnt for charcoal at the time. Me, I use Swiss, but not every lot is identical and a target shooter will retest loads every case of powder.
     
  7. dogrunner

    dogrunner Member

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    I recall reading about some injuries sustained by workers in Atlanta in the 1960's when they unearthed black powder charged explosive cannon balls and succeeded in detonating several.........bottom line seems to be that the stuff will outlive you............IF you're careful!
     
  8. mykeal

    mykeal Member

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    The answer to powder stability with age depends entirely on how the powder was stored and what the environment was, so there's really no single easy answer.

    Real black powder is the most stable; it can be rendered unusable by direct contact with moisture, but if spread out and allowed to thoroughly dry out, then sifted, it will return to as-new condition.

    There is anecdotal evidence that Pyrodex can degrade over a long period of time if exposed to local environments (changing temperature and/or humidity extremes), and it does not appear to respond to 'rehabilitation'. However, many people report no degradation, especially if stored properly.

    My own experience with 777 is that it can be stored over at least 5 years without noticeable degradation; I keep it sealed in original containers, so I don't know if ambient exposure causes a problem over the long term, and I can't comment on whether it can be rehabilitated.
     
  9. Voodoochile

    Voodoochile Member

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    I have 5 pounds of each, Pyrodex P & Goes FFFG in their orriginal containers & then Vacuum Sealed in food saver bags & then inside my Powder cashe box to preserve their life as much as I can before I use them, but I have also used Goex & Pyrodex that was just sitting on the shelf for over 12 years & could not tell the difference in the new or the old stuff.
     
  10. Macmac

    Macmac Member

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    Real Goex Powder goes bad unopened in the can in about a week. You should send any older than that to me! :D
     
  11. Coltdriver

    Coltdriver Member

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    I have a couple of pounds of dupont from a keg purchased in the 60's.

    I also have the benefit of living in Colorado where moisture is not an issue.

    The stuff works great.
     
  12. scrat

    scrat Member

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    The Official Answer.

    Black Powder is good for at least a thousand years or so.

    There you have it
     
  13. Smokin_Gun

    Smokin_Gun Member

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    Thanks Scrat... :O)
     
  14. scrat

    scrat Member

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    no problem


    hahahaha
     
  15. 4v50 Gary

    4v50 Gary Moderator Staff Member

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    Right now, I'm tired and really full of myself. So, with that in mind, I've a snappy little statement that I've just made with my own little mind (as I am surrounded by luminaries here) and will quote myself.

    It's bedtime and I'm taking my dentures out for soaking. Goodnight all.
     
  16. jack404

    jack404 Member

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    I know that a test of some BP found stashed in 1882 was fine after ball milling again, was clumpy or something from memory,

    the test was back in the 1980's

    so in a unopened airtight can .hmm 50 - 100 years maybe

    no foolin

    i read about the signal rockets they buried with the ming warriors

    some still fired thought most tested didnt fire ( there where thousands ) after how many years?? 3000 ???

    seems gunpowder is quite stable

    cheers

    jack
     
  17. mykeal

    mykeal Member

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    Perfect. Can I use it?
     
  18. 4v50 Gary

    4v50 Gary Moderator Staff Member

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    Yes, but attribute it to me.
     
  19. Macmac

    Macmac Member

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    Come now the stuff goes bad in a day after hunting. Everybody knows that, and so this is why BP hunters fire their gun off at the end of a day where no game was shot.. :rolleyes:

    1000 years huh? Well not in the hold of a rocking ship it don't... And not in the truck of a car either for a year or more.

    Ya' ll know you need to send all that bad BP to me! :D
     
  20. Zerstoerer

    Zerstoerer Member

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    ...back to my original question -
    Is this some kind of expiration date on the bottom of the can?

    Has anyone doen any tests with new and old blackpowder to see if there is a difference in velocities?
     
  21. arcticap

    arcticap Member

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    Here's one report by mec:

    http://www.thehighroad.org/showthread.php?t=190244&highlight=original+rounds

    Here's another report by mec:

     
    Last edited: Apr 14, 2009
  22. Sagetown

    Sagetown Member

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    :uhoh: Looks like a Product Code, Zerstoerer. Certainly not an "Expiration Date"...... scrat says this black stuff will last 1000 years. :D
     
  23. Macmac

    Macmac Member

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    Well I wouldn't know about 1000 years but a good bet is more than 100, so long as it isn't rocked, rolled and wallygagged about, where the components can separate, like it does at sea.
     
  24. GENTLEMAN OF THE CHARCOAL

    GENTLEMAN OF THE CHARCOAL Member.

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    Yess!! I forgot the name of the gentleman who re-milled the black powder and don't feel like scrolling back up to find him.
    Years ago I had a pound of Black Mag 3. (or 2 or whatever they called it) It was in the container and had never been opened. It was 3fffg and it had set around for a year or so. I picked it up one day and it was hard as a rock. I very carefully cut the plastic container and put the powder clumps in a ball mill for awhile. It done right and shot as good as ever. I'vd never had any kind of problem with Triple Seven and I'vd shot it for years and years....
     
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