That is called, among other things, the ladder method. You do not have to start out with .2gr increases. You would use that when you are really fine tuning the load. Also, it works better if you are shooting at a distance farther than 100 yards. ie, I have a 22-250 that you could shoot 10 rounds with a .2 difference in powder that would still give you a raggedy hole at 100 yards. The greater distance makes it easier to plot the hits and clusters. BTW, it works. :grin: