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Join Date: Jun 2002
Location: Portland, Oregon
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172.28 and 118.35 are the number of lead balls of the measured barrel diameter which would equal one pound. Though this system went out of use in 1910 (in Germany, I don't know about elsewhere), we still see it today in shotgun "gage" bore measurement.
No idea abut the othe part of your question, sorry. --Dwight |
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