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Old 03-11-2010, 02:24 PM
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5-Shot 5-Shot is offline
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Location: Hills of East Tennessee.
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You're not going to believe this! Based on an article by Homer Powley, written many years ago, you need a v-block with the sides of the "v" 36 degrees from horizontal. Lay the slug in the v-block. Measure the distance from the top of the slug to the bottom of the groove. The slug diameter = 0.8944 x that distance. Let me know how it works out.

Ed
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