Powder Shelf Life

Discussion in 'Reloading' started by bookworm, Mar 10, 2009.

  1. bookworm

    bookworm Well-Known Member

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    Any rules of thumb for how long powder will will keep before it changes enough to affect accuracy?
     
  2. Moman

    Moman Well-Known Member

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    I recently talked to Hodgdon about this and they said 30-50 years if it's stored appropriately.
     

  3. ICANHITHIMMAN

    ICANHITHIMMAN Well-Known Member

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    Wow that is good to know thatks for the post.
     
  4. JeffVN

    JeffVN Well-Known Member

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    I agree with Hodgden. I'm still shooting powder my father in law bought in the 50's (NOT a typo). Its a tad bit slower than new bought (I tested some throught my chronograph), but it works just fine - so do the primers, but they are likely corrosive so I stopped using them.

    Jeffvn
     
  5. Lookinforlunkers

    Lookinforlunkers Member

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    I've been told that it is good as long as it smells strong, regardless of age
     
  6. J E Custom

    J E Custom Well-Known Member

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    That is correct and if it smells like acid it's bad.

    The new powders in plastic jars stores very well .The cardbord type containers don't.

    Keep it in a climate controlled room off the floor and it will last almost indefinitely.

    I still have some of the original H 4831 that Hodgon started with buy pulling WW2 20mm
    bullets and packaging it to sell.

    J E CUSTOM
     
  7. Alfred Crouch

    Alfred Crouch Well-Known Member

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    I am using some that I know is 40 years old. As long as it is protected from moisture and excess heat it will keep.