What is the muzzle velocity of the M27?

What is the muzzle velocity of the M27?

• A. 1,800 ft per sec
• B. 2,200 ft per sec
• C. 2,550 ft per sec
• D. 2,800 ft per sec

Answer: (C)

Muzzle velocity is the speed of the bullet the moment it leaves the barrel. For the M27, the commonly cited figure used in Marine training and ballistic tables with standard 5.56x45 ammunition and the rifle’s barrel length is about 2,550 feet per second (roughly 777 meters per second). This value reflects the combination of the powder charge, bullet weight, and the 18-something inch barrel length typical to the M27, which accelerates the bullet to that exit speed. The other options would indicate velocities well outside the established data for this rifle-and-ammunition setup, so 2,550 ft/s is the figure used for planning trajectories and ballistics in this context.

Muzzle velocity is the speed of the bullet the moment it leaves the barrel. For the M27, the commonly cited figure used in Marine training and ballistic tables with standard 5.56x45 ammunition and the rifle’s barrel length is about 2,550 feet per second (roughly 777 meters per second). This value reflects the combination of the powder charge, bullet weight, and the 18-something inch barrel length typical to the M27, which accelerates the bullet to that exit speed. The other options would indicate velocities well outside the established data for this rifle-and-ammunition setup, so 2,550 ft/s is the figure used for planning trajectories and ballistics in this context.