...uhh....I can't see any marks, your photograph..... and I have my glasses on.
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...uhh....I can't see any marks, your photograph..... and I have my glasses on.
How about now.
http://i34.photobucket.com/albums/d1...ps0ef4df8b.jpg
Ok, that I see!
However, I do not recall seeing any of these on my experiments, today. That said; I had a circular ring of scoring, around the bullet, probably right around or just behind where your marks are. (Of course, yours is a different cartridge and probably different bullet.)
And the width of the scoring ring is about the width of your mark, getting thinner and broken as I seated in more.
When i use that depth checking method I use a sharpie to make the bullet black. It makes it easier for me to see the marks.
Maybe your chamber has a long freebore before engaging the lands--that might explain the lack of markings where the rifling begins?
The cartridge and bullet has nothing to do with this. The marks are easier to see on longer VLD bullets. The circular mark you are seeing is more than likely caused by you comparator tool. You need to polish the bullet with 0000 steel wool, each and every time you place the bullet into the chamber. Or you can blacken the bullet with a sharpie, or use a match and soot it up, to help make the marks more visible.