CORRECTION:
PMC Bronze, the ammunition we used in this content, was referred to as M193 – which it is not. PMC Bronze is a civilian 223 Remington load, not specifically military M193 spec. That minor difference, however, does not change the point of the video itself in regards to barrel length and velocity differences with 223 (or 556).

223/5.56 is a highly capable round…when it has sufficient velocity to perform. Barrel length plays a significant role in the velocity of the projectile. In this video we demonstrate the velocity of 55gr “M193″ out of a 14.7, 16 and 20” WWSD, discuss what that means.