My Bartlein is within an inch of POA after a clean. And takes 2 or 3 to get back on.
But I never hunt with it, without a couple rounds thru it after a clean.
Velocity takes around 5 rounds to settle after a clean as well.
I only clean it now it's all setup maybe every 150 rounds.
HBN helps. I get next to no copper.
Best barrel I have had.
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