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Marks on spent shells?

1236 Views 6 Replies 4 Participants Last post by  joshuades
Greetings,
I'm new to this forum. I took my 6.8 out for the first time yesterday and noticed some marks on all of the spent casings. They are vertical lines about 5/32 apart on the neck. Can anyone tell me if there is something amiss? Is this normal?

Here is URL for my photo; https://flic.kr/p/3780144010
Thanks guys for all your help. I kinda suspected the barrel extension but now I am comforted by all your experienced advice and knowledge.

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Greetings,
I'm new to this forum. I took my 6.8 out for the first time yesterday and noticed some marks on all of the spent casings. They are vertical lines about 5/32 apart on the neck. Can anyone tell me if there is something amiss? Is this normal?
The photo did not show up but if they are scratches length ways up the case neck it comes from the case hitting the barrel extension lugs as it is being pulled out of the chamber by the extractor. Does not really hurt anything but you could wrap a small piece of sand paper around the tip of your finger and smooth out the corners of the lugs on the right side next to the port.
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