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Acceptable amount of copper jacketing in new DD barrel?

URGILOVERR

Private
Minuteman
Mar 6, 2023
85
14
USA
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Is this an acceptable amount of copper in a brand new DD barrel? Does this look normal? None of my other new dd barrels had this much when purchased, if it’s GTG please let me know.
 
I doubt that’s a new barrel, if it is, you may contact whoever you bought it from and ask them why it has so much copper in the grooves.
 
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I've seen new barrels actually peel off pieces of jacket when they were new. You could see the pieces embedded in the target backer.
 
Obviously, it's a return that no one looked at and just got re sold. I wouldn't want that.
 
Does DD test fire at the factory? If they do it may explain the fouling. Shoot it and see how it does.