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Neck turning ?'s

 
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Old 08-29-2010, 10:46 PM
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Neck turning ?'s

I am wondering if most of you wait to turn your necks till after your brass has been once fired or if you do it during the first loadings of new brass? Last time I did my brass I didn't have the turning tool till after they had been once, maybe even twice.
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Old 08-29-2010, 10:55 PM
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Re: Neck turning ?'s

I dont neck turn but I read and think about it a lot. I believe most people do it after its been fired once. Now maybe people that have done it can smack me for speaking on this with no experience but I am thinking that if you fire form your brass then size it (using a die with an expander button not a bushing die) that once the button goes through then you know your center is perfect and all the imperfections have now been pushed to the outside and you can turn off the high spots... I am thinking very seriously about turning necks. so hopefully someone chimes in with a good technique.
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Old 08-29-2010, 11:29 PM
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Re: Neck turning ?'s

Quote:
Originally Posted by Sako7STW View Post
I am wondering if most of you wait to turn your necks till after your brass has been once fired or if you do it during the first loadings of new brass? Last time I did my brass I didn't have the turning tool till after they had been once, maybe even twice.

The reason that you turn the necks of brass is to =

1= True up the neck thickness.
2= Turn the neck to fit the chamber better.
3= Uniform the neck tension on your bullets for consistant/best accuracy.

It is best to turn the necks before fire forming because if the neck wall thickness
varies, the first time fired will offset the inside of the neck by whatever the thickness
variation. and because the chamber is centered on the bore the brass will have
run out from then on.

If you turn and then fire form, the brass will be as true as the chamber.

Check the thickness of all new brass with a micrometer and using the case with the
thinnest wall thickness set the neck turning tool to just clean up this case and then
do the rest the same thickness.(No More than nessary).

If you have a wild cat that uses larger neck sizes (Like .338 to .308) turn the necks
before you size them down and they will be more concentric.and ready to fire form.

J E CUSTOM
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Old 08-30-2010, 05:58 AM
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Re: Neck turning ?'s

+1 je
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  #5  
Old 08-30-2010, 07:46 AM
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Re: Neck turning ?'s

Turn new cases. Most of my turning is to fit tight necked chambers and I wouldn't be able to chamber the brass unless it is turned to create neck clearance.
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Old 08-30-2010, 08:34 AM
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Re: Neck turning ?'s

my question is... can a tight neck clearance of .003 or less (loaded round under chamber neck diameter) cause poor ES issues?
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Old 08-30-2010, 10:32 AM
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Re: Neck turning ?'s

Quote:
Originally Posted by groper View Post
can a tight neck clearance of .003 or less (loaded round under chamber neck diameter) cause poor ES issues?
NO, it doesn't hurt ES.
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