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Old 4th April 2019, 02:45 PM   #9
CSinTX
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If it is filled with lead grape shot leaving some void area, the resulting density might be similar to if it were solid steel. Or maybe it is a cannon ball but a replica just made to look like it is hollow.

Google images ,cannon ball plug hole, cannon ball wooden fuse, etc and you'll see other examples that look like yours. Click the images and many will lead to further discussion. Apparently one hole was a fill hole and one hole was a fuse hole that was kept plugged until use.

Last edited by CSinTX; 4th April 2019 at 02:59 PM.
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