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Old January 7, 2013, 11:35 PM   #3
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Join Date: September 9, 2008
Location: Woooooshington
Posts: 1,797
First, follow James Ks recommendation, then, if you must... Flex-Hone makes chamber hones in 400 and 800 grit for specific cartridges. They are intended to "finish" a cut chamber with a smooth, specific angle crosshatch... typically 45 to 60 degrees.

I would not suggest using these without a thorough understanding of what will happen if you use a Flex-Hone incorrectly... they can be, in the wrong hands, very "aggressive". A pretty decent thread on the subject of chamber polishing can be found here.

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