5.56 vs 5.45x39 On Mild Steel: NOT So Similar After All?
This video compares the ballistic performance of two popular rifle cartridges, 5.56x45mm NATO and 5.45x39mm, when impacting mild steel at 50 yards. Different bullet weights and types are tested for each caliber, including 55 gr FMJ and M855 for 5.56mm, and 60 gr FMJ and 7N6 for 5.45x39mm. The test uses a 5.56" A529 gr mild steel plate. The video aims to highlight the differences in performance between these seemingly similar rounds, emphasizing entertainment and educational value while cautioning viewers about the dangers of shooting steel.










