Take a look with a borescope, and see what you can see. Maybe you’re coming out of a carbon build up in the bore?
Then run an air gauge on the barrel that’ll cypher out more.
But
At the end of the day, how does it shoot?
If the accuracy is fine, it’s just one of those things..... you really can’t do much about it (short of re barreling) and who says you’ll get any better results with anything new........
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There are no absolutes
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