I wanna share something I came up with. I shoot Black Hills Match 168gr TSX out of my AR10 with a Match 20" custom barrel, timminey trigger, Nf scope bla bla bla..... I had alot of brass, and wanted to see if I could make a round that would shoot the same dope. Well last year I did that and would like to share it here with you guys. The only difference is I used the TTSX I might change it but I need to use up what I have first. Here we go, I'm gonna keep it simple. IMR 4064 powder 42.5gr, my old BH brass which is LC, Federal210 primers, topped off with 168gr TTSX. I put a lot of time into trial and error but here are the results. Out of my gun it shoots the same exactly out to 950yds that's as far as iv'e taken this gun. I hope this info could save someone some time,and or money. good luck.