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Old January 13, 2013, 11:21 AM   #28
Brian Pfleuger
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Join Date: June 25, 2008
Location: Central, Southern NY, USA
Posts: 18,791
I'm just quoting what it says on the bottle. No grit rating and it says "Non-abrasive".

It's certainly very, very fine. Two minutes of polishing at 500rpm on mild steel yielded no measurable reduction in diameter of a cylinder for VarmintAl. Measuring a cylinder doubles the measurement because you're polishing and measuring both sides. So even doubling the measurement was undetectable with his micrometers.
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