The major company's that load match grade loads have their own recipe in there rounds , you will never know what powder or grains . They may list barrel length an twist rate , All the OAL is standard length for that round . Just work your way up there , don't start at the top of the scale. Accuracy loads are mostly midrange on the load scale for 100 yard shooting . Long range is different , what are you loading for ? Longrange target shooting , hunting , what distances .