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Old August 11, 2010, 08:23 AM   #6
Mike Irwin
Join Date: April 13, 2000
Location: Northern Virginia
Posts: 39,177
I may be wrong in my assumptions here, but I always understood that VPI was essentially a very light, easily vaporizable (is that a word? I don't know) oil.

Oil vapor will, over time, kill primers. I've seen it happen.

If, however, VPI isn't oil, then it may not be an issue.
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza

Baby Jesus cries when the fat redneck doesn't have military-grade firepower.
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