I clean my SW M-41 pretty regular in an ultrasonic tank. When comparing my brand new barrel to the rest of the gun, there's a big difference in luster of the blueing. The barrel is nice and shinny with a rich luster. The rest of the frame now looks dull by comparison. Since the barrel hasn't yet dealt with ultrasonic cleaning, I suspect it too will dull out in time. Anyone else notice finish dulling on their blued guns from an ultrasonic cleaner.?
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