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how do you all chuck up your barrels in a three or four jaw when the barrel has a taper ????? All I have to do is to set the shoulder back maybe .015 or so,so its not like I am putting a lot of stress on the barrel. Just curious as to the proper procedure....if I need to make some sort of bushing or something similar | ||
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I glue one of my barrel vise bushings on it. | |||
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Wrap a turn of heavy copper wire around the barrel where you want the jaws to grip it. Ray Arizona Mountains | |||
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Should have asked how you are holding the muzzle end. If it is in a spider you should be able to use the wire fine. I use a center in the spindle so a tapered barrel tries to walk out of the chuck even with wire of something for the jaws to purchase on. | |||
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Nick is right about the barrel wanting to walk out of the chuck. I forgot to mention that little detail. And believe me, you can't clamp it tight enough to hold it so you need something on the outboard end to hold it, like a live center. Thanks for reminding me Nick. ray Arizona Mountains | |||
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I'd put the muzzle end in the appropriate size collet and use my collet chuck to drive, supporting the chamber end with a live center. John Farner If you haven't, please join the NRA! | |||
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To do what you want to do, use a 3-jaw with a penny between each jaw and the barrel, and run a live center into the breech end. Clemson NRA Endowment Member US Army Veteran CWP Holder Gunsmith | |||
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Thanks thats one idea I haven't considered thanks for putting your three cents in  That will also cure the dreaded barrel walking,.. previously mentioned | |||
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Between centers. _______________________________________________________________________________ This is my rifle, there are many like it but this one is mine. My rifle is my best friend, it is my life. | |||
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Aluminum blocks on the four jaw chuck and the breach end in a steady rest. You can sand the blocks to sorta match the taper www.KLStottlemyer.com Deport the Homeless and Give the Illegals citizenship. AT LEAST THE ILLEGALS WILL WORK | |||
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Yeah, I like to use a 5c collet, and I do chamber in the steady, but for simply pushing a shoulder forward, there is no need to go with an elaborate setup. You will be working close to the tailstock, so any runnout in the 3-jaw will be pretty much eliminated by the time you get to the other end where the live center will support the barrel. Good luck! Clemson NRA Endowment Member US Army Veteran CWP Holder Gunsmith | |||
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It doesn't matter how you set it up if you put an indicator on the face of the barrel shoulder and have .0000 runout. Butch | |||
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Holding a tapered barrel in the chuck is one thing. Setting it up to make sure that the shoulder that you will cut is square with the axis of the bore is another. It's awful tempting to simply clamp the barrel in the chuck and take a quick swipe at the shoulder. The proper procedure would be to resist such temptation and set the bore on center, even for a measly .015". _______________________________________________________________________________ This is my rifle, there are many like it but this one is mine. My rifle is my best friend, it is my life. | |||
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I have a brass 5-C with .010" taper for this. Quick, easy and last forever. Only runs about 15 bucks. Just remember zero run out. | |||
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Clamping on the OD does not insure zero run out. The barrel's OD needs to be concentric to the bore. And being that most barrels are sanded then polished It is doubtful that the OD is concentric to the bore www.KLStottlemyer.com Deport the Homeless and Give the Illegals citizenship. AT LEAST THE ILLEGALS WILL WORK | |||
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They generaly arent. You must sweep the i.d. This is why a 4 jaw stays on one lathe and a 3 jaw "movable" on the other. ________________________________________________ Maker of The Frankenstud Sling Keeper Proudly made in the USA Acepting all forms of payment | |||
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How much wood could a woodchuck chuck if a woodchuck could chuck wood? Mike Legistine actu quod scripsi? Never under estimate the internet community's ability to reply to your post with their personal rant about their tangentially related, single occurrence issue.  What I have learned on AR, since 2001: 1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken. 2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps. 3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges. 4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down. 5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine. 6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle. 7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions. 8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA. 9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not. 10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact. 11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores. 12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence. 13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances. | |||
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Well for those fortunate enough to own two lathes, That would be the ideal way to go. Since I don't I have tooling for one machine and must swap stuff out as needed. Although another machine is in the works And if a wood chuck could chuck wood it would be equal to around five times it's body weight per day   www.KLStottlemyer.com Deport the Homeless and Give the Illegals citizenship. AT LEAST THE ILLEGALS WILL WORK | |||
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Just do it the lazy old machinist's way. He was too old to lift the 10" 3 jaw on his 13" lathe so he just dialed everything in with the 4 jaw. With a little bit of such practice it can be fast and efficient. | |||
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