Brand-new Chinese QBZ-191 assault rifles can’t put proper spin on the bullets. As a result, the bullets tumble mid-air and strike the target sideways, resulting in “keyholes” instead of round bullet holes.

What A Deep Dive on China's QBZ-191 Service Rifle Can Teach Us About the Army's New XM5 - The Truth About Guns

Chinese manufacturer: For the new generation QBZ191 rifle, we use a 5,8x42 mm cartridge due to its superiority over counterparts of the Soviet and NATO design

CF - QBZ-95 - Armoured Beast

Brand-new Chinese QBZ-191 assault rifles can’t put proper spin on the bullets. As a result, the bullets tumble mid-air and strike the target sideways, resulting in “keyholes” instead of round bullet holes.