Thread: Underboring
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Old 10-08-2012, 09:41 PM   #8 (permalink)
Sidewinder Hoarder
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Join Date: Dec 2010
Location: Fascist Valley

I notice problems, regardless of what marker I'm using, when the paint is more than .005" larger than the barrel. Not always, but it seems at least 1/100 shots, when using rather brittle ("tournament grade") will break when I have underbored .007 or .008. With some rec brands that would seem to have a tougher shell I can get away with that without problems, but I don't even both any more. I stick to .005" rule these days as it works well enough and save a bit of headache
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