Put together a new load of 50gr VMax, 24.0 gr Xterminator. Need to test it out so this challenge seems like a good fit.
You could work that up a bit. X-Terminator always gives me the best accuracy pushed to max. In a 5.56 chamber you can take that load at least 2 grains higher.
I'm hoping to get to the range this weekend, to shoot one of these targets.