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What is this

It looks like a cartridge fed from a box magazine into a dirty chamber to me. Neither of those are a problem if the gun is shooting well.
 
It’s a brand new barrel shilen select match. I can load to min COAL and it sticks bad witch is 3.685 I can load it down to 3.5 and stop it from sticking. Round was not fed from a mag single fed straight into chamber
 
That’s my thoughts too but just couldn’t figure out why it would be that much less than saami spec I’ve never had a rifle that I couldn’t load longer than the books say
 
That rub mark looks like its from an ejector pushing it to one side. Hard to see just how much youre jammed. Shooting bullets jammed is alot better if you dont unload it- only chamber what youll be firing
 
That’s what I thought but when I called the barrel company they said if that was the case it would hit at the front side of the ogive not the back side
 
Is it only hitting that one spot ? That is what it appears to be doing, from the photo. If so, I would say the lead area is off kilter or has a high spot. Can you make a chamber cast and do some measuring ?
 
Is it only hitting that one spot ? That is what it appears to be doing, from the photo. If so, I would say the lead area is off kilter or has a high spot. Can you make a chamber cast and do some measuring ?
Yes only hits that one spot and idk how to cast a chamber
 
Suggest you research the blueprint values of the following:
1. The Cartridge Specification.
2. The Chamber Specification.
3. And research what your Shilen Select is supposed to be compared to the industry specs.

The details in item 3 will also include their specific neck diameter, and throat details that affect bullet seating.

Then, also suggest you determine the most critical values for the following:

1. Shoulder Datum length, and compared to your brass. The difference affects how much the base of the case will go forward on virgin or sized brass. (This is typically small for most cartridge designs but for example on a 303 Brit, it can blow forward 0.035" - 0.045" or more and needs too be tracked.)
2. CBTO, distance to touch lands for the given bullet.
3. Shoulder to body junction diameter, virgin, fired, post size.
4. 200 line diameter, virgin, fired, post sized.

With those understood, you will be able to determine the vast majority of causes and issues with chambering rounds.
 
The 'land' marks continue down the bullet to what looks like a ridiculously short freebore.
Load a bullet backwards and use your borescope to measure/examine the freebore.
Your concentrically is good, right?
Turn the cartridge 180 degrees and see if it marks a new spot or follows the cartridge.
 

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