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  1. #1
    Tinhorn
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    shelf life of powder

    When did IMR stop using metal containers and switch to plastic? I have several partially used metal cans of 3031 and dont know how old they are or if safe to use.

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  2. #2
    Team 35 Remington Co-Capt'n Contributing Member
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    Re: shelf life of powder

    They should be safe. I have many cans of IMR powder and they are all fine. Some of mine are quite old.
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  3. #3
    Army Veteran 67-69 Korea Administrator
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    Re: shelf life of powder

    Still have a can of IMR 4350 that was in a house fire in 1998 can is scorched and the powder is still good.

    I used up an 8lb can of surplus BLC#2 that I bought in 1970 from a fella who bought it in 1960, last of it went down range 2 yrs ago.

    Gun powder shelf life is incredible and for some reason don't have use by date on it.
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  4. #4
    DWB
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    Re: shelf life of powder

    I just finished up an old can of IMR-4320 that was wearing a $8.59 price tag... Not sure how old that made it. It still smelled like powder when I loaded it and when I shot it. Also finished up the last of my cardboard pounder of Blue Dot (still wearing a Hercules label) that had a $7.50 sticker on it from Gambles. I think that Gambles has been closed for about 30 years now. All that ammo went bang just fine, too.

  5. #5
    Tinhorn
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    Re: shelf life of powder

    Good to know, thanks guys.
    Team 45-70 member #420

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  6. #6
    High Priest of the Powder Hoarders Contributing Member
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    Re: shelf life of powder

    As long as it's been stored properly (cool and dry) it should be fine. When powder starts breaking down it has an acrid smell to it and often develops a rusty red hue.
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  7. #7
    Site Contributor Contributing Member
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    Re: shelf life of powder

    Quote Originally Posted by DWB
    Also finished up the last of my cardboard pounder of Blue Dot (still wearing a Hercules label) that had a $7.50 sticker on it from Gambles. I think that Gambles has been closed for about 30 years now. All that ammo went bang just fine, too.
    I'm still drawing on my cardboard 8 #'er of Unique I bought about 15 years ago, it hasn't been stored in the best conditions (with that loose fitting top,) but it's still good to go.

    I miss the romantic era of metal IMR cans (I still have 2 'cans' of IMR3031 on the bench) and the old cardboard Hercules cans (Hercules actually used to put their powder in metal cans, so the cardboard is the more 'modern' variant) but I think the plastic containers everyone uses nowadays makes more sense, simply from a storage and use point of view.

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  8. #8
    Sidewinder
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    Re: shelf life of powder

    I still have about 100# of ww2 surplus IMR4831 I got for $2.00 a pound in 78 velosity and presure still seem to be the same

  9. #9
    Site Contributor Contributing Member
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    Re: shelf life of powder

    What are all these numbers you guys are talking about? All my powder cans look like this - no numbers. What's up? Curious Wind

  10. #10
    Gunfighter
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    Re: shelf life of powder

    Golden Peasant?? Now that's gotta be an ancient can of powder!

    Some items picked up recently (an estate disposal of personal effects). The IMR 4227 had decomposed, mostly fine powder, no longer in just pellet form. Looks like it was made in 1975, and had a price of $3.98 !! The packaging has changed a lot. These CCI250 primers and the 2400 (Hercules??) powder still work just fine. Who is Ted Williams??









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