Removing a solved choke and also installing an interchangeable interchangeable choke mechanism on a Remington 870

February 19, 2014Bill MarrGunsmithing0


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" data-medium-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1785.jpg?fit=300%2C98&ssl=1" data-large-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1785.jpg?fit=1024%2C337&ssl=1" loading="lazy" class="size-medium wp-image-1621756" src="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1785.jpg?resize=300%2C98&ssl=1" alt="I begin by identify the dimension of the bore utilizing a bore gauge. This gauge has actually a .700" traditional that the indicator is zeroed too. The analysis on the indicator is included to .700" because that the boring diameter. In this situation the bore to be .729" (.700"+.029") and also the choke at the muzzle was .715". " width="300" height="98" srcset="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1785.jpg?resize=300%2C98&ssl=1 300w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1785.jpg?resize=1024%2C337&ssl=1 1024w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1785.jpg?w=2000&ssl=1 2000w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1785.jpg?w=3000&ssl=1 3000w" sizes="(max-width: 300px) 100vw, 300px" data-recalc-dims="1" />I begin by determining the dimension of the bore making use of a boring gauge. This gauge has a .700″ conventional that the indicator is zeroed to. The reading on the indicator is included to .700″ for the boring diameter. In this instance the bore to be .729″ (.700″+.029″) and the choke in ~ the muzzle to be .715″ (.700″+.015″).

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" data-medium-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1789.jpg?fit=178%2C300&ssl=1" data-large-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1789.jpg?fit=609%2C1024&ssl=1" loading="lazy" class="size-medium wp-image-1621759" src="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1789.jpg?resize=178%2C300&ssl=1" alt="The reamer is changed with two opposing screws over an angled guide. As the knives are moved towards the rear of the reamer, the reamer expands. As the knives move towards the front of the reamer the cut diameter decreases. " width="178" height="300" srcset="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1789.jpg?resize=178%2C300&ssl=1 178w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1789.jpg?resize=609%2C1024&ssl=1 609w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1789.jpg?w=1574&ssl=1 1574w" sizes="(max-width: 178px) 100vw, 178px" data-recalc-dims="1" />The reamer is readjusted with 2 opposing screws over an angled guide. As the blades are moved towards the behind of the reamer, the reamer expands. As the knives move towards the front of the reamer the cutting diameter decreases.
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" data-medium-file="https://i0.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1795.jpg?fit=111%2C300&ssl=1" data-large-file="https://i0.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1795.jpg?fit=379%2C1024&ssl=1" loading="lazy" class="size-medium wp-image-1621763" src="https://i0.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1795.jpg?resize=111%2C300&ssl=1" alt="The reamer is propelled by a big t-handle. The set up is quite long, perfect for the longest sporting barrels. " width="111" height="300" srcset="https://i0.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1795.jpg?resize=111%2C300&ssl=1 111w, https://i0.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1795.jpg?resize=379%2C1024&ssl=1 379w, https://i0.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1795.jpg?w=1209&ssl=1 1209w" sizes="(max-width: 111px) 100vw, 111px" data-recalc-dims="1" />The reamer is thrust by a big t-handle. The collection up is quite long, suitable for the longest sporting barrels.
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" data-medium-file="https://i2.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1794.jpg?fit=300%2C143&ssl=1" data-large-file="https://i2.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1794.jpg?fit=1024%2C489&ssl=1" loading="lazy" class="size-medium wp-image-1621762" src="https://i2.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1794.jpg?resize=300%2C143&ssl=1" alt="After the final pass the throttle is removed. " width="300" height="143" srcset="https://i2.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1794.jpg?resize=300%2C143&ssl=1 300w, https://i2.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1794.jpg?resize=1024%2C489&ssl=1 1024w, https://i2.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1794.jpg?w=2000&ssl=1 2000w, https://i2.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1794.jpg?w=3000&ssl=1 3000w" sizes="(max-width: 300px) 100vw, 300px" data-recalc-dims="1" />After the final pass the throttle is removed.
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" data-medium-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1798.jpg?fit=225%2C300&ssl=1" data-large-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1798.jpg?fit=768%2C1024&ssl=1" loading="lazy" class="size-medium wp-image-1621748" src="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1798.jpg?resize=225%2C300&ssl=1" alt="Here is my reaming set up on the lathe. The barrel is moved by the four-jaw chuck and also secured in the stable rest. The tailstock feeds the reamer. " width="225" height="300" srcset="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1798.jpg?resize=225%2C300&ssl=1 225w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1798.jpg?resize=768%2C1024&ssl=1 768w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1798.jpg?w=2000&ssl=1 2000w" sizes="(max-width: 225px) 100vw, 225px" data-recalc-dims="1" />Here is my reaming set up top top the lathe. The barrel is propelled by the four-jaw chuck and also secured in the stable rest. The tailstock feeds the choke pipe reamer.

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" data-medium-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1803.jpg?fit=225%2C300&ssl=1" data-large-file="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1803.jpg?fit=768%2C1024&ssl=1" loading="lazy" class="size-medium wp-image-1621750" src="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1803.jpg?resize=225%2C300&ssl=1" alt="The choke reamer squares the muzzle of the barrel when the reduced reaches the suitable depth. " width="225" height="300" srcset="https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1803.jpg?resize=225%2C300&ssl=1 225w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1803.jpg?resize=768%2C1024&ssl=1 768w, https://i1.wp.com/rememberingsomer.com/wp-content/uploads/2014/02/IMG_1803.jpg?w=2000&ssl=1 2000w" sizes="(max-width: 225px) 100vw, 225px" data-recalc-dims="1" />The choking reamer squares the muzzle the the barrel as soon as the reduced reaches the ideal depth.
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More information on choke tube installation deserve to be found here: Choke tube installation