That's pretty much what I do except I generally move in steps of .3 or .5 grs and leave it at that when I find a good load. .2 generally isn't a big enough step to make a difference in the cartridges I shoot but there are times when it works. I also experiment with different seating depths, bullets, powders and primers. Thousands of possible combinations for any given cartridge and good record-keeping is a must. Labeling is important as well. I identify my "try" loads by using a Sharpie pen on a sandwich bag. I also ID the target with load # so I can study it later.
Life Member NRA, TSRA
Smokeless powder is a passing fad! -Steve Garbe
I hate rude behavior in a man. I won't tolerate it. -Woodrow F. Call Lonesome Dove
My favorite recipes start out with a handful of used wheelweights.