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Rifles, Reloading, Optics, Equipment
Gunsmithing
Threading a barrel without taking barrel off?
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<blockquote data-quote="Garry J" data-source="post: 1783848" data-attributes="member: 71612"><p>The job he did with a file looks pretty good but the OD of the barrel is or may not be concentric to the bore. Threads need to be cut indicated to the bore. If you have a lathe with the bead long enough to put the barrel and receiver in a four jaw chuck and a center but then how do you indicate the bore. If the head of the lathe has a through bore big enough to put the receiver in then you can use soft jaws in the four jaw chuck with an ID tapper to match your barrel. Cut slow and at the last .005 to .010 recheck the bore to make sure nothing has moved before your final cut. I have recut some that had bullet strikes on the brake or Suppressor. You pay a lot to get a chamber parallel to the barrel so why put a corncob pushed on the end. You want that bullet to pass though what ever you put on that barrel with even pressures on all sides.</p></blockquote><p></p>
[QUOTE="Garry J, post: 1783848, member: 71612"] The job he did with a file looks pretty good but the OD of the barrel is or may not be concentric to the bore. Threads need to be cut indicated to the bore. If you have a lathe with the bead long enough to put the barrel and receiver in a four jaw chuck and a center but then how do you indicate the bore. If the head of the lathe has a through bore big enough to put the receiver in then you can use soft jaws in the four jaw chuck with an ID tapper to match your barrel. Cut slow and at the last .005 to .010 recheck the bore to make sure nothing has moved before your final cut. I have recut some that had bullet strikes on the brake or Suppressor. You pay a lot to get a chamber parallel to the barrel so why put a corncob pushed on the end. You want that bullet to pass though what ever you put on that barrel with even pressures on all sides. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Threading a barrel without taking barrel off?
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