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Make sure you get the 0.5 chrome oxide, not the diamond.
Some of us have stopped using the diamond because the chrome oxide gives the edge a smoother feel on the skin.
Don't worry, it will be more...

You really should be able to have a BBS shave from the Norton. It can be done. One of the major keys is beard prep. Do not skimp in that area. Tha being said the next step in sharpness will come from...