Table of Contents
How effective is M855?
The M855 is a good round, Woods said, but it is “yaw dependant.” Like all bullets, it wobbles when it travels along its trajectory. Its effectiveness depends on its yaw angle when it hits a target.
What’s the difference between M193 and M855?
M193 vs M855 The M193 cartridge is a 55 gr lead core surrounded by a copper jacket (FMJ-BT, full metal jacket with boat tail). While the M855 “green tip” cartridge is 62 gr and has a steel core “penetrator” at the tip which helps it go through barriers more easily (also FMJ-BT).
Should I use M855 or M193 ammo?
Keep in mind that the twist rate of your barrel will also affect how well the heavier M855 round performs. If your barrel has a 1:7 or 1:8 twist rate, you’re good to go with M855, but if you have the more popular 1:9 twist rate such as I do, you’re better off running with the M193 ammunition.
What is the muzzle velocity of M855 ammo?
The specified muzzle velocity of M855 ammo is roughly 3,020 feet per second depending on the manufacturer. The primer and case mouth are chemically sealed, just like M193 ammunition. Heavier and slightly slower, the M855 is a 62-grain 5.56×45 caliber bullet traveling around 3,000fps at the muzzle.
How was the thickness of the M855 and M193 achieved?
Since the thickness was achieved by stacking two plates together we’ll take a look at the plates separated. M855 is on the left and M193 is on the right. The front plate is on the bottom and the rear plate is on the top. A view of the front face showing both shots.
Why is the M193 so dangerous?
So the M193 is a lighter round that flies at a higher speed and is unstable when it reaches the target—the tumbling results in more extensive and lethal wounds. However, the other side of the coin is that fragmentation at impact means the M193 does not have the penetrating power to rip through armor, hardened steel, and many other barriers.