I'm not too far away from kegging my first beer so this is something I've been looking at / thinking about...
From what I've read so far I thought your 20psi sounded pretty high...
Sure enough,
according to the chart on BF at least, 20psi & 6degC/43degF is about 3vols CO2 - high even for a lager *if* we take what the chart says at face value.
I've no doubt that in the same way as I know from experience X grams of priming sugar is about right for a given style, you probably know this is probably about right for the style / your tastes.
So do you reckon it works the same way for kegging? I.e. as with so much in brewing, regardless of what the web says, there's a element of practice and trial & error needed to get your gear dialled in and work out what works on your setup and for your tastes?
Or am I over thinking it and you just like your beer
really fizzy?