Recoil and the .308 do not exist together! It just doesn't happen except in the head of one who fears the rifle ... period!
Get a light-weight single shot .308.
Put the buttplate against the tip of your nose.... you can guess the next step.
....let me know if the results match your assertions.
DISCLAIMER: ...and no, I don't actually advocate this as a test of recoil.
When the right to effective self-defence is denied, that right to self-defence which remains is essentially symbolic.
Freedom: Please enjoy responsibly.
Karma. Another word for revolver: because what goes around, comes around!