John H. Hall: Breechloader Inventor and Father of American Mass Production
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John H. Hall: Breechloader Inventor and Father of American Mass Production
John Hancock Hall (January 4, 1781 – February 26, 1841) invented the M1819 Hall breech-loading rifle and built the manufacturing system that proved interchangeable parts were actually achievable at scale — not just a theory. His rifle works at Harper
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