What are these bore marks?

[Pickle Rick]

What are these rings? This is on a new CHF barrel. Is this something from CHFing?

 

[Pickle Rick]

Turns out these are chatter marks from the mandrel. Honestly I don’t really care but one of them seems to be pretty deep. Oh well

 

[Threadcutter308]

What are these rings? This is on a new CHF barrel. Is this something from CHFing?

They're from the borescope........

 

[FUNCTIONAL]

You should see the grooves of factory savage barrels. Looks like tank tracks drove down them. They still shoot well.

My TRG has a chf barrel and it looks spotless. Doesn't mean yours won't shoot though.

 

[LR1845]

They're from the borescope........

THIS^^^ is the new answer to all bore scope related questions!

 

[Threadcutter308]

THIS^^^ is the new answer to all bore scope related questions!