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Factory Ammo Powder Weight consistency?

Discussion in 'Handloading and Reloading' started by BBDartCA, Sep 5, 2011.

  1. BBDartCA

    BBDartCA Active Member

    Jul 7, 2011
    Has anybody ever looked into the variability in charge weight for a given box of factory ammo? Would be curious to know what kind of % weight variance typically seen over 20 to 100 rounds.
  2. mikeadams

    mikeadams New Member

    Sep 8, 2010
    OKC, OK
    I actually did this last weekend. I am pulling a large lot of steel case factory ammo for a friend, and when I started, for the first 20 rounds I weighed the powder to see what it was. Surprisingly enough, the powder weight was pretty much bang-on for every round - no variance to speak of. This particular lot was 45 Auto and weighed on an RCBS 505..

    You didn't specify caliber or manufacturer, so YMMV.

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