"frosted" ?
From time to time, I see references to a barrel:
Being "Frosted".
What does this mean?
Leaded?
Rusted?
Pitted?
Does it hurt accuracy?
It it a "safety" issue? (if it is shot)
Is it shootable?
Is it the same as "shot out"?
I have also seen references to a bore being "Dark"
What is THAT all about?
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