Stillbeeman,
Regarding chamber/cartridge canting, I've thought about experimenting with this by taking a few new brass cases, running a larger expanding ball through, PFL the cases, load and shoot and comparing the runout of these to once fired factory loaded brass. I can see where there may be a benefit to this experiment if you are loading new cases for a belted round. I have had rifle chambers that were a bit generous in dimension in a belted round and the factory loaded case expanded significantly.
I've also been wondering that if the new brass case is sized and loaded as mentioned, centered on an axis to the bore and is able to expand equally around its entire width, that it might possibly reduce the case body splitting caused by metal fatigue and may also have an increased case life compared to cases that were factory loaded to begin with and then resized several times.
Again, more food for thought.
That might have some interesting results. I don't do much of anything to my brass until it has been fire formed to the rifle it will be used in but if your method works, it could save quite a bit of wear and tear as well as powder and bullets.
