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Old August 2, 2011, 10:55 PM   #8
Senior Member
Join Date: May 25, 1999
Location: Too close to Houston
Posts: 4,196
The swaging tools push the displaced material out of the primer pocket. The reamers trim it off.

I don't see any problem with reamers that remove the crimp chamfer the opening a bit as long as it's not overdone. Some don't want to remove any brass from the case and prefer to swage.
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