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Question about neck wall thickness?

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Unread 04-25-2003, 07:26 PM
JBT JBT is offline
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Join Date: Feb 2003
Posts: 24
Question about neck wall thickness?

Which is better to do ? Ream the neck or outside turn.
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Unread 04-25-2003, 07:36 PM
Platinum Member
Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,473
Re: Question about neck wall thickness?

Reaming a neck mearly removes material and does nothing to improve neck wall consistency. A careful neck turning will reduce neck thickness as it uniforms the neck walls all the way around.
Neither process will improve concentricity but a turned neck that is fired in a properly cut chamber will give you a good start.
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Unread 04-25-2003, 10:20 PM
dwm dwm is offline
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Join Date: Feb 2003
Location: Texas
Posts: 736
Re: Question about neck wall thickness?

I have asked this question on a couple of boards including benchrest.com.

So far no one has recommended reaming case necks.

I have inside neck reamers.

My best shooting cases to date started off being inside reamed before outside turning.

I found that the inside of the case necks were not uniform at all.

On fired cases, the reamer did not take off a lot of material, but it did engage.

I outside neck turned after reaming them.

The material that was removed might have been from the dies I was using since the expander ball was kind of hard to pull through.

I don't use those dies any more. No more expander balls.

Not sure if it was the infamous donut that I removed or not.

The 100 - 200 yard benchrest guys didn't seem to like the question.

They shoot tiny one hole groups without reaming the inside.

Just wanted to share this because I have asked the question before myself.

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