Just got back from the range and tested my plate with canvas. 5 rds of M855 at 50 yds from a 16" barrel. 4 rds were fired at the center and 1 fired at the edge. The 4 rds at the center I only had 2 fragments exit. The 1 shot fired at the side and hit about 2 inches from the edge, the spall cut through the edge and exited leaving about a 4" tear along the edge of the plate. I have not dissected the canvas yet but it seems like the canvas in about a 2.5" radius around the bullet hole is all chewed to hell so I am not surprised that the edge blew out. I am pleased with the results. No deformation on the back of the plates from the rounds. I am pleased with the results. Going to redo the canvas and tape and throw it back in the carrier. Sorry no pics. Waiting on a new camera as my fantastic children broke yet another one.
The plate was one of the early ones from The Targetman. I also have some from ar500armor.com. I like the fit of the ar500 better as they have an advanced shooters cut which gives a little more room to shoulder a rifle. Playing with the 2 it is definitely more comfortable and doesn't seem like I am giving up any protection.