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Pardini .32 ACP Lands?

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Post by beeser Mon May 11, 2015 7:38 pm

I noticed that there are two parallel lines on each land of a Pardini .32 ACP barrel.  I've never seen this before.  What is the purpose of this type of rifling?

beeser

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Post by Wes Lorenz Wed May 13, 2015 1:08 am

Probably caused when the reamer was extracted in the lathe.
Wes Lorenz
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Post by jerry lehrer Fri May 15, 2015 12:22 pm

Scott,

The chamber reamer should not get near a finished rifling land.

Jerry

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Post by Wes Lorenz Fri May 15, 2015 12:40 pm

Hi Jerry,
I think he is talking about the rifled bore and I was suggesting gauled material on the bore reamer or maybe even the rifleing slug.
Wes
Wes Lorenz
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Post by TampaTim Fri May 15, 2015 8:07 pm

A picture would be great to look at.

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Post by jerry lehrer Sat May 16, 2015 12:27 pm

Scott,

The "rifling slug" or BUTTON might have had some grit that produced the artifacts that are seen.

I feel certain that Dave Wilson could get to the cause. 

One needs a highly specialized borescope-camera to investigate.  I no longer have access to
that piece of equipment.

jerry lehrer

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