Obsessing over a tenth of a grain is likely not the answer. I think your brass, the seating depth of the bullet, and the crimp are almost certainly the determining factors between what we are able to make and that "Remington accuracy" that everyone wants and no one seems to get, as Beerjman alludes to in his post. Of course the quality of all of your components is extremely important, too.

If you really want to get into this subject, you might get a copy of Gil Hebard's book, A Pistol Shooter's Treasury. It has some excellent information regarding the 52 and loading for it. The info is a bit old, but it is still current, and I have yet to see anyone do a more thorough job of getting into the matter. In my mind, it is the gold standard on this subject.