Scope ring height = head angle?

I learned this from my decades in competition archery, I will try to translate to airguns later below.
With the (compound) bows, you hold the bow - close your eyes - raise the bow to aiming comfort level - open your eyes = and you will see where the peep site shall be moved up or down, and according to that height you mount the scope. Do it several times until the pupil + peep sight + scope pin + target all aligned.
With the "airgun" I am doing the same: close my eyes - raise the gun to aiming position with a comfortable cheekweld - open my eyes, and that shows where is a scope high or low in relation to eyesight. Adjust from there.
This brings the eye sight to your comfortable = body posture with a good cheekweld.
You never want to chase the scope, but mount the scope to your body. And this way you can spend hours and hours shooting, no crick in the neck :)
I am shooting BR ranges only. Adjusting the stool chair height to my established cheekweld.
The X50 scope height on my Impact is 82.8 mm=3.26"
The Nikko scope height on my Leshiy2 is 75.4 mm=2.97", and I am swapping that scope on L2 with LPVO there and back (no Qdisconnect, but allenkeys) .
The LPVO scope height on my Leshiy2 is 76.6 mm=3.02"

Sorry, I am not a pro to give a pro advise, but just saying worth to try? :)
 
BigHun, Thanks for the tips but once again I am shooting BR using free recoil, with zero cheek, shoulder or hand influence on the rifle. My Only body part touching the rifle is my trigger finger.

I do use a similar method as you described when using my hunting rifle . Two completely different disciplines and techniques.
Sorry, I must have miss read it somewhere. I am also shooting 100M BR from a one-piece-rest, but sometimes I just like to take a closer look how funny it flies
 
What 1 piece rest are you using BigHun?
DIY
The Canadian winters lasts 5-6 months :)
I made this one during last long sit in the basement.

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