November 22, 2013, 07:04 PM
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#21
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Member
Join Date: December 24, 2012
Posts: 63
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Testing hardness with pencils. Not as accurate as a bonifide Brinell tool but will get you in the ballpark.
http://castboolits.gunloads.com/show...s-with-pencils
Alloy calculator:
http://castboolits.gunloads.com/show...loy+calculator
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