That's all well and good, but remember too that once bad headspace has been corrected for in this manner you are ending up with the case protruding back out of the chamber farther before firing, leaving just that much more of it unsupported by the chamber walls.
Seems to me that you could also end up with a “custom” case that may not fit into other guns. However I do realize that sometimes you have to do what it takes to make a rifle work.
