So I'm reloading for my 223 Ruger American. I don't have a chronograph yet. So with that said I'm reloading 62 gn fmj with 26gn of CFE with the OGIVE set at 1.78 with a grouping of .38 MOA. I wanna tweak the seating depth to see if I can get it tighter. Should I test at 100 thousands increments, moving the bullet foward and backward? My max Ogive is 1.885, wondering how much shorter I can go. I know I have to watch for over preasure, any input is greatly appreciated.