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WD40 and ammo - They don't mix!
Posted By: Bill in NC
Date: 7/7/20 02:42
About 16-18 years ago I obtained a quantity of MP43 East German manufactured ammo. The wooden box was beyond repair and the paper boxes holding the ammo had seen better days. To preserve the ammo, I repackaged it in vacuum sealed bags. About 75% of the ammo was in excellent condition and was repacked in the vacuum bags. The remainder had surface rust rust on the steel cases ranging from minor to quite a bit. Steel wool was used to remove the rust and the cases were sprayed with WD40 and placed in non-vacuum plastic bags as the ammo to be used next when going the the range.
I don't take the MP43 to the range that often so the WD40 cases sat around for all these years. Now EVERY WD40 coated round tried so far is a dud. The WD40 must have seeped into the primer pockets and "killed" the priming compound. The ammo which was did NOT have the WD40 put on the cases to counter the rust problem fires just fine. I guess I'm going to be looking for some brass MP43 cases and be pulling the WD40 coated ammo apart and reloading the brass cases.
Just another example of where WD40, guns and ammo should NEVER be used together.
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