New CA Mesa in 6.5 PRC bore condition

Dhbwa

WKR
Joined
Sep 10, 2018
Messages
837
Location
Richland WA, SE WA
Ran about 10 patches thru the bore with Montana extreme copper killer and never got even near a clean patch. Ran outta time so I’ll start up again tomorrow.

Seemed strange...

Thoughts?
 
What is under your patch... a bronze or brass jag or brush? That will cause the patch to discolor.
 
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