Do you store powder in your MEC bottles?

My shot bottles get way dirtier than my powder bottles.

Always wipe them with a dryer sheet pulled through the eye of your cleaning rod. No static.

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.

Ks5shooter said:

Always wipe them with a dryer sheet pulled through the eye of your cleaning rod. No static.

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Another member here suggested Static Guard spray…
I tried it and it works excellently…!!!!
I have sprayed all my bottles/hoppers inside and out….

EDIT to add:
It was @Jonny2guns who made the suggestion…

I sprayed my plastic scale pan with graphite mold release.

berettaprofessor said:

Well, consider me convinced. MEC bottle emptied!

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We knew you'd come around.