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Old May 11, 2013, 12:56 PM   #33
Senior Member
Join Date: April 24, 2010
Location: Ohio
Posts: 530

Here is a link to a set of small bore gauges on eBay they are also available from Amazon and Enco. This should be a must have for anyone who loads or reloads. Measure from 1/8 to a little over 1/2. You just insert the gauge into the hole and open it until you feel a light drag then remove and measure over it with a micrometer. With a little practice you can get accurate readings in the tenths of a thousandth.
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