This expert analysis from Military Arms Channel compares the M855 and M855A1 5.56x45mm NATO cartridges. While M855A1 demonstrates superior terminal ballistics with immediate fragmentation in ballistics gel, it significantly increases chamber pressure, leading to accelerated rifle wear, reduced barrel life, and potential feed ramp damage. The analysis highlights that M855A1's destructive impact on firearms makes it less suitable for high-volume civilian use despite its terminal effectiveness.
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