This is my first post, and I'm not sure if this has been discussed here before. I am looking to build some steel targets, and I have located some 12560 armor plate class 1. The 12560 is 1/2" thick in 4'x8' sheets. I have also located a water jet to cut the targets. Before I lay out some cash, I am trying to figure out if 12560 armor plate is on par with AR500 steel plate of the same thickness. The 12560 class 1 has a Rockwell c hardness of 37, while the AR500 is somewhere around 52 on the rockwell c scale. Will the 12560 withstand repeated rifle round hits, or should it be only used for pistol rounds?