What am I looking at here?

[Whiterabbit]

Dumb question.

You said you used lee case trim tools, that includes presumably the lee deburr tool. If you stick the deburr tool over a piece of brass (no bullet of course) does the edge of the deburr tool line up perfectly with the scribe line you are seeing in the first post?

[troysland]

Dumb question.

You said you used lee case trim tools, that includes presumably the lee deburr tool. If you stick the deburr tool over a piece of brass (no bullet of course) does the edge of the deburr tool line up perfectly with the scribe line you are seeing in the first post?

I have the same question, because.......I create the same scratch/ring mark when I use the LEE chamfer/deburr tool. It's very common when deburring the outer edge of the case mouth after trimming to length.

[Whiterabbit]

that's exactly why I ask. Seeing as that tool is about a half inch in diameter, it's really easy to ring my 460S&W cases. Doesn't really happen much on my 7x57 and I'd be surprised to see it on 223, but still, you never know. Just takes a small slip of the wrist and the brass is ringed. So worth asking. sounds like led farmer had the same thought too.

[mroels]

I do indeed use that tool. I'll see if that's it next time I trim and give an update

[Colt562]

I could be way in left field on this one, but thought I read something on here that stated that a line can occur if lubed to much and then sized after lubing it

[mroels]

I could be way in left field on this one, but thought I read something on here that stated that a line can occur if lubed to much and then sized after lubing it

The issue I have with this theory and the trimming theory is that it's only happening with omc brass. Also the circles are all in the exact same place (i measured) and are a perfect straight line. It seems odd to me that if it wasn't intentional it'd be that perfect.

[xrMike]

I have the same question, because.......I create the same scratch/ring mark when I use the LEE chamfer/deburr tool. It's very common when deburring the outer edge of the case mouth after trimming to length.

Bingo, yeah, I get the same circumferential mark on my cases using that tool.

RE: other replies in thread... Case head separation looks different from that, and like somebody else pointed out, appears much lower, down near the, uh, case head.

[CGT80]

If you have a flash that washes out things too much when you get close then you can do the ultra pro thing and put something to diffuse the light in front of it. I use an index card or TWO sometimes when I am shooting my reload questions and the brass gets washed out. I am a professional photographer so my advice is purely professional in regards to doing that. I learned it from my instructor at RCC and I use it from time to time.

I forgot about that trick. I learned it from the same people and same place. I got a AS in Photo from RCC, but I am not a pro.