This video details a significant lead fouling issue encountered with a SIG P322 pistol, even after the barrel was reportedly replaced by the manufacturer. The presenter conducts extensive testing with various .22LR ammunition types, using a borescope to document the rapid and severe lead buildup. The findings suggest a potential systemic issue with the P322 barrels, as the fouling occurred much faster than expected and even with ammunition types cited by SIG as being used for testing.
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