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Neck Turning In A Lathe

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Old 02-09-2009, 08:55 PM
Silver Member
Join Date: Aug 2008
Location: Arvada, Colorado
Posts: 359
Neck Turning In A Lathe

I have been gathering everthing I think I need for Long Range Handloading. Does anyone know where I can get a case holder keyless chuck to hold the case in a lathe? I have a Hardinge Tool Room lathe and would like to hold the cases in the lathe to turn necks and perform other operations. I will be loading a 300Weatherby, 300Win and 338 Lapua.

2nd. question. I notice that most people do not use the expander ball when sizing there brass. I have 200 pcs. of new 300 WW brass and the neck are deformed. I need to straighten these necks but not sure what tool I need. I watched a video of Darrell Hollands and he mentioned a "Case Neck Uniformer" made by sinclair. I cannot seem to find it on there site. Can someone point me in the right direction, or tell me what I need to use? Thanks for looking.
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Old 02-10-2009, 01:30 AM
Silver Member
Join Date: Jan 2006
Location: South Africa
Posts: 420
Re: Neck Turning In A Lathe

There is a K&M and a Sinclair expander mandrel available. They round out the necks nicely (and are matched to their own neck turning pilots).

You can get them through Sinclair and the other precision reloading suppliers.
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Old 02-10-2009, 07:33 AM
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Join Date: Nov 2005
Location: Maryland
Posts: 824
Re: Neck Turning In A Lathe

I made my own shellholders, for turning necks, and if you'll send me your e-mail address, I'll send you some pictures. You can make these on your lathe.
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Old 02-10-2009, 03:37 PM
Silver Member
Join Date: Aug 2008
Location: Arvada, Colorado
Posts: 359
Re: Neck Turning In A Lathe


I called Sinclair and was able to order everything I need for uniforming case necks.


That is very generous of you and I Thank You kindly. Check you PM for e-mail address.

Thanks Guys,

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Old 02-12-2009, 09:07 AM
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Join Date: Oct 2007
Location: Mountians of SW NC, near Asheville
Posts: 1,596
Re: Neck Turning In A Lathe

I guess anyone with a lathe will want to try it on necks. I used a brass 3C collet turned to .475 to hold my cases for neck turning. But, doing it on my old South Bend 9" lathe was too much work and too slow for what was being done so I went back to my Forster hand held neck turner.
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Old 02-12-2009, 12:30 PM
Junior Member
Join Date: Jan 2009
Posts: 26
Re: Neck Turning In A Lathe

Here is a great article on the subject

Neck-Turning with Lathe or Mill
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Old 02-12-2009, 01:01 PM
Silver Member
Join Date: Aug 2008
Location: Arvada, Colorado
Posts: 359
Re: Neck Turning In A Lathe

You are right, having a lathe makes me think I should use it, but that is not the main reason for using the lathe. I believe, as I'm sure most do that the bullet should be as concentic as possible to the outside case diameter. I believe that the I.D. of neck should be checked as well as the O.D. for runout. Then and only then could a evaluation be made on what operations need or don't need to be done.

If the case body is concentric to the neck O.D. and you have lets say .002 neck wall thickness variance, in my mind the I.D. of the neck should be bored, not the O.D. of neck. I think by doing this that you would then have a case with zero or near zero runout on new brass.

I could be totally wrong here, but it is something I am experimenting with and trying to learn about. I want my cases perfect and I believe it can be done. It may not be practical but just something I am pursuing. I have not been able to find any article or reloading videos that address any runout isses on the I.D. of neck. I am sure someone on here can set me straight on this subject and it would be greatly appreciated.


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