Do you store powder in your MEC bottles?

Do you store powder in your MEC bottles?

  • Yes, MEC bottles are fine for storage if they're capped and stored appropriately.

    Votes: 4 12.5%
  • No, powder should only be stored in the original plastic Hodgdon bottle

    Votes: 22 68.8%
  • What's a MEC bottle?

    Votes: 6 18.8%

  • Total voters
    32
I didn't vote, because I don't have a MEC press. I do have several RCBS UniFlows and a Lee Load-All, however. And I don't store powder in any of them. First, I don't want to etch the plastic on the hoppers. Second, if the seal on the original bottle is intact, (to re-use) the powder will not degrade quickly, if at all. The hopper is not air tight. Third, I was always taught to store powder in the original container to prevent mix-ups and the like. Only times I have left powder in a hopper is overnight once when I didn't have time to finish a current batch.
 
Powder completely rotted the cheap acrylic hopper of a Redding measure. So I don’t leave the cheap acrylic RCBS and Bonanza loaded.

MEC bottles and Dillon hoppers are darkened - NG, residual solvent, graphite? - but not etched.

Dram Worx makes Pyrex hoppers for most measures. That isn’t going to rot, etch, or much color. I’d cover it against UV when idle, though.
 
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