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<p>[QUOTE=&quot;Conder101, post: 404837, member: 66&quot;]I&#039;ll double check my math when I also have a chance to double check a couple of the other constants.&nbsp; (I was having to try and remember the density pf zinc from memory and I&#039;m sure it was off some.)</p><p><br /></p><p>There is still something wrong with yours though.&nbsp; A 41.5 GRAM steel cent?&nbsp; I think that should be 41.5 grains.&nbsp; The steel cent had two different weights, 2.5 and 2.7 grams.&nbsp; I don&#039;t know which was first and which was later.&nbsp; For that reason I used a weight of 2.6 grams to do the weight percentage.[/QUOTE]</p><p><br /></p>

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