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Rifles, Reloading, Optics, Equipment
Gunsmithing
Threading a barrel without taking barrel off?
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<blockquote data-quote="Andrew Cowling" data-source="post: 1782908" data-attributes="member: 109547"><p>When I work on clients guns I let the gun tell me which is the best method of threading. My prefered method is to cut between centres as I know then that it is perfectly square to the bore.</p><p></p><p>I have recenly done a batch of them. As for factory barrels the outer profile isn't always concentric to the bore so removal and running between centres is the best option IF the barrel comes out easily. One I did recently the barrel refuced to budge and the shortened barrels profile was way off centre. Chucked the action in the 4 jaw and dialed it in with the live centre at the muzzle end. A pain in the arse job but a good result in the end.</p><p></p><p>I am building a rifle for my wife in 260 remington with a match barrel that I fitted and finished at 28 inches. Cerakoted in her favourite colour. I then decided to fit a muzzle brake. Being a round Savage Axis action (the rifle has been named and engraved 'Terminaxis') it was easy to chuck in the 3 jaw as the run out was less than .001" and over a 28 inch length at the live centre that is more than close enough to get a good square job.</p><p></p><p>Now my Ruger custom VT that I also fitted a 28 inch 30 calibre match barrel to was a different story. I didn't intend on fitting a muzzle brake when I built the rifle but since using it I have been leaning towards fitting them to help with muzzle jump. Especially since I will be shooting at 1 kilometre. Due to the action configuration it is near impossable to clamp it in a chuck so the barrel was removed and thread cut between centres. This rifle has been cerakoted in dark earth colour. My action wrench and barrel vice (I made both myself) didn't leave a single mark on the finish.</p><p></p><p>When I am build a new rifle from the start all threads are done between centres before the barrel is fitted to the action.</p><p></p><p>So each rifle and situation is different and I let the gun tell me what it needs. However, my prefered method is to remove and turn between centres as I believe that is the most accurate of all ways to do them.</p><p>Cheers</p><p>Andrew</p></blockquote><p></p>
[QUOTE="Andrew Cowling, post: 1782908, member: 109547"] When I work on clients guns I let the gun tell me which is the best method of threading. My prefered method is to cut between centres as I know then that it is perfectly square to the bore. I have recenly done a batch of them. As for factory barrels the outer profile isn't always concentric to the bore so removal and running between centres is the best option IF the barrel comes out easily. One I did recently the barrel refuced to budge and the shortened barrels profile was way off centre. Chucked the action in the 4 jaw and dialed it in with the live centre at the muzzle end. A pain in the arse job but a good result in the end. I am building a rifle for my wife in 260 remington with a match barrel that I fitted and finished at 28 inches. Cerakoted in her favourite colour. I then decided to fit a muzzle brake. Being a round Savage Axis action (the rifle has been named and engraved 'Terminaxis') it was easy to chuck in the 3 jaw as the run out was less than .001" and over a 28 inch length at the live centre that is more than close enough to get a good square job. Now my Ruger custom VT that I also fitted a 28 inch 30 calibre match barrel to was a different story. I didn't intend on fitting a muzzle brake when I built the rifle but since using it I have been leaning towards fitting them to help with muzzle jump. Especially since I will be shooting at 1 kilometre. Due to the action configuration it is near impossable to clamp it in a chuck so the barrel was removed and thread cut between centres. This rifle has been cerakoted in dark earth colour. My action wrench and barrel vice (I made both myself) didn't leave a single mark on the finish. When I am build a new rifle from the start all threads are done between centres before the barrel is fitted to the action. So each rifle and situation is different and I let the gun tell me what it needs. However, my prefered method is to remove and turn between centres as I believe that is the most accurate of all ways to do them. Cheers Andrew [/QUOTE]
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Threading a barrel without taking barrel off?
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