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Porting has the undesired consequences of shortening the effective barrel length and reducing muzzle velocity, while a muzzle brake is an extension added to the barrel and does not reduce muzzle velocity. Porting has the advantage for faster follow-up shots, especially for 3-round burst operation. [citation needed]
As far back as 1787 a Frenchman by the name of M. Magne de Marolles gave an account of choke-boring, though he argued against it. [3]Some sources state that the first pioneer was a Czech named Dominik Brandejs, who made shotguns with a choke in order to reduce the dispersion of shots, but his design was not popular in the 1820s.
Gun Research Declassified Visit to Mauser-Werke 2022. Page 52; The Ultimate in Rifle Accuracy By Glenn Newick · 1990; Gunsmithing at Home: Lock, Stock & Barrel - Page 79, John E. Traister · 1996; Gunsmithing Modern Firearms: A Gun Guy's Guide to Making Good Guns Even Better, Bryce M. Towsley · 2019; Gunsmithing - Page 176, Roy F. Dunlap · 1963
Example of a typical gun port of a 36-pounder battery on a 19th-century ship. The lid is half open, and features an observation window and a ventilation opening, shown half-opened. It opens by pulling two chains that run from the top of the lid and through the hull, and closes by pulling chains running from below the lid and through the gun port.
A barrel selector mechanism is used to choose whether the top or bottom barrel fires first. The barrel selector is combined with the manual safety and is located at the top rear of the receiver, behind the top lever. If the first shot misfires and the gun does not recoil, the trigger can be reset to fire the second shot. This is accomplished by ...
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A female worker boring out the barrel of a Lee-Enfield rifle during WWI. Gun barrels are usually made of some type of metal or metal alloy.However, during the late Tang dynasty, Chinese inventors discovered gunpowder, and used bamboo, which has a strong, naturally tubular stalk and is cheaper to obtain and process, as the first barrels in gunpowder projectile weapons such as fire lances. [2]
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