Nice looking rifle. If there is a LR match on 6/22-23, you should shoot it. I don't know about the Marines, but at least in Alaska the 3 main Army bases are looking at cutting weekend range control, because of the Sequester budget problems. Also that's a good way to see if there are any bugs to work out. I used a 40X in .308 for years, out to 1000, using 175's and they worked, you just have to know about wind, which I'm sure that you do.
Thanks for your service and good luck with your new rifle.