I am looking for a little help. I have a SBS Tactical .308 with a 20" Barrel. I am taking a 1000 class in a few weeks and I need to find a good load to shoot. Over the last few years I have tried to take the class and I have had several problems shooting factory ammo. I know I am limited on what I can shoot because of my small barrel. I have been recommended SMK HTBT 175gr with RL-15. I have also purchased Burger 185gr "Juggernaut" with RL-17. Any thoughts? I chose the Burger because of the high BC (0.560). It 185gr to heavy? I live in California and right now I am limited on powder, so my options are slim. I think the Sierra 175gr with RL-15 looks like the best, but I am new to this and need some help. Thanks!