Accurate figures regarding powder developing formulas for the .308 round cartridge utilizing 168-grain Sierra SMK bullets are critical for safe firing. Carefully reference multiple manuals, such as the latest Nosler https://imr-4350-and-imr-4064-po307989.angelinsblog.com/40970908/h4350-reloading-data-for-308-with-168gr-smk-bullets