Accurate data regarding propellant loading formulas for the .308 round chambering utilizing 168-grain Hornady SMK projectiles are essential for safe firing. Carefully consult multiple manuals, such as a latest Nosler https://is-h4350-powder-temperat551299.wikiexcerpt.com/4635409/h4350_reloading_data_for_308_with_168gr_smk_bullets