Accurate data regarding powder developing formulas for the .308 bore chambering utilizing 168-grain Nosler SMK bullets are essential for responsible firing. Carefully consult multiple manuals, such as the latest Speer https://sig-sauer-p210-5-pulgada172224.sasugawiki.com/8021038/h4350_reloading_data_for_308_with_168gr_smk_bullets