I am going to try my first F-class match which is held at 600 yds. The rifle has a 26 inch 1 in 10 twist barrel, .308 Win Any ideas on loads? I have had good luck with 168 SMK but would the Lapua 155 Scenar be a better choice, less wind drift. Or the 175 SMK. Was going to get some and try to work up a load. What do some of you use?