Quote Originally Posted by Singlestack View Post
Something I have always wanted to know is, what are the real world (not theoretical) advantages of M855 over M193? From what I can tell both will penetrate Level IIA/IIIA, but M855 is more expensive and generally not as accurate. Also, if you have any personal experience with both that would help.
Specs require it to penetrate 10ga 1010 or 1020 steel (like car door, helmet, etc)... No such spec required for m193.

So think of it as better at penetrating basic barriers like windshield, car door, steel entry doors than m193... But not true AP