Question on bow tuning to set the correct nock point height

Rick,

I have been watching your Vol 3 dvd and have a question regarding the tuning of the bow for nock point height. You say that the location of the nock point should be set according to your natural sight picture and to adjust the nock point up or down as needed so long as the arrow flies true. It seems though this should be according to some reasonable distance based on the bow, the arrow configuration being used and what not. Do you have any thoughts or recommendations on this? I"ve been using about 20 yds or so, but perhaps that's a bit close and based on my arrow and point wt (200 gn point and 11 gr/inch arrow), I don't think 40 yds is practical. I could see this changing as one's ability improves too, I suspect.

At what distance are you tuning the bow you were shooting in your dvd by way of comparison?

I thank you in advance for your input.

Steve