Achieving accurate 308 Winchester performance sometimes involves careful reloading. This introductory guide centers on a widely-used combination: Sierra SMK 168 grain projectiles paired with H4350 powder. https://sam-7k-threaded-front-si528309.wikinstructions.com/588969/308_remanufacturing_manual_match_one_hundred_sixty_eight_grain_bullets_h4350_amount