I apologize for resurrecting an almost 2 year old reply, but could I get some clarification on what this means? I understand that M193 at a certain velocity (20" bbl IIRC) will defeat AR500 steel plates, and M855 will defeat poly. I am not aware of ceramics having any issues defeating run of the mill 5.56mm rounds.
youre right, upon rereading my comment I used ceramic instead of steel/poly. White box is cranking 3100, according to the modcast 3400 out of a 16 in barrel- eats ar500 for breakfast. NOT ceramic. I’ll flag it and see if Matt can delete it.