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First Pattern 1865 Allin Conversion - Trapdoor Springfield

First Pattern 1865 Allin Conversion - Trapdoor Springfield

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Published on November 30, 2015
Duration: 10:01

This video explores the historical significance of the 1865 First Pattern Allin Conversion, also known as the Trapdoor Springfield. It details how, following the US Civil War, Springfield Arsenal master armorer Erskine Allin developed this innovative breechloading conversion for the vast number of existing muzzleloading rifled muskets. The video highlights its .58 caliber and complex extractor system, noting it as the initial iteration before later improvements and the eventual adoption of the .45-70 caliber standard, which served US forces until the late 1890s.

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