Achieving peak accuracy with your 308 rifle often involves careful load development. This guide focuses on combining the popular Sierra 168-grain SMK projectile with H4350 propellant . Many shooters find that https://308175gr44grh4350powderw697225.wikihearsay.com/4581858/optimizing_308_loads_sierra_168gr_bullets_with_powder_h4350_gunpowder