Mosin Nagant 1891 30 7,62x54R - How to Full disassembly and reassembly (field strip)

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6m Dec 13, 2020

During the Russo-Ottoman War of 1877–1878, Russian troops armed mostly with Berdan single-shot rifles suffered heavy casualties against Turkish troops equipped with Winchester repeating rifles, particularly at the bloody Siege of Pleven. This showed Russian commanders the need to modernize the general infantry weapon of the army.

Various weapons were acquired and tested by GAU of the Ministry of Defense of Russian Empire, and in 1889 the Lebel M1886 was obtained through semi-official channels from France. It was supplied together with a model of the cartridge and bullet but without the primer and the smokeless powder. Those problems were solved by Russian scientists and engineers (the smokeless powder, for instance, was produced by Dmitri Mendeleev himself).

In 1889, three rifles were submitted for evaluation: Captain Sergei Ivanovich Mosin of the imperial army submitted his "3-line" caliber (.30 cal, 7.62 mm) rifle; Belgian designer Léon Nagant submitted a "3.5-line" (.35 caliber, 9 mm) design; and a Captain Zinoviev submitted another "3-line" design (1 "line" = 1⁄10 in or 2.54 mm, thus 3 lines= 7.62 mm).

When trials concluded in 1891, the evaluators were split in their assessment. The main disadvantages of Mosin's rifle were a more complicated mechanism and a long and tiresome procedure of disassembling (which required special instruments — it was necessary to unscrew two fasteners). Nagant's rifle was mainly criticized for its lower quality of manufacture and materials, due to "artisan pre-production" of his 300 rifles. The commission initially voted 14 to 10 to approve Mosin's rifle. At this point the decision was made to rename the existing commission and call it Commission for creation of the small-bore rifle (Комиссия для выработки образца малокалиберного ружья), and to put on paper the final requirements for such a rifle. The inventors obliged by delivering their final designs. Head of the commission, General Chagin, ordered subsequent tests held under the commission's supervision, after which the bolt-action of Mosin's design was ordered into production under the name of 3-line rifle M1891 (трёхлинейная винтовка образца 1891 года).

Wikipedia: https://en.wikipedia.org/wiki/Mosin–Nagant


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Table of Contents

Timecode Title
00:52 Bolt disassembly
02:05 Modin Nagant disasembly
05:00 Morrin Nagant reassembly
07:52 Bolt assembly
09:43 Shooting

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