10 Grain adjustments don't make even a little bit of sence ! There isn't any reloading Manual that would recommend such procedure . Have you ever reloaded before ! The load Data in my Hornady Manual lists a starting load of of 50.6 Gr. and a Max of 55.9 Gr. . You don't start at Max and then work your way backwards , just the opposite is what you need to do ! There are 96 Pages in my Vol. 1 Manual before you get to the Reloading Data , I strongly suggest that you read those pages before you have an Accident !