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You are.
Most barrels are not as straight as yours.
Straight barrels don't have thermal drift issues.
Curved barrels do because one side of the barrel is thicker and expands more as the barrel heats up.
Differential expansion causes the barrel to deflect away from the thick side of the barrel.
Most barrels are not as straight as yours.
Straight barrels don't have thermal drift issues.
Curved barrels do because one side of the barrel is thicker and expands more as the barrel heats up.
Differential expansion causes the barrel to deflect away from the thick side of the barrel.
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