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Old August 16, 2010, 02:17 PM   #3
Hardcase
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Join Date: April 14, 2009
Location: Sunny Southern Idaho
Posts: 1,901
Well, there's this anecdotal evidence that says that a compressible filler (Dacron being one of them) can lead to chamber ringing. The theory goes that the Dacron can compress, leaving a void between it and the bullet. When the powder charge goes off, the Dacron strikes the base of the bullet and upsets it somewhat. A few times of that and the chamber gets a ring around the mouth of the case.

I'm not aware of anything approaching research and it's one of those subjects that seem to get some folks riled up. I don't use any fillers at all, so I can't comment one way or the other.
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