From Meopta's web site, their Artemis 3000 user manual says (my comments in parentheses):
"Turning by one click makes the reticle center move by about 1,5 cm/100 m (1-4x22), (this is .432 MOA per click.)
0,25 inch./100 yrd (1,5-5x20, 3-9x42, 4-12x40, 4-16x44, 3-10x50), (this is exactly .25 MOA per click.)
1cm/100m (7x56, 3-12x56), (this is .36 MOA per click.)"
This is quite a difference between click values across all these scopes. I think they use the same turret mechanics for each scope. With different mangifications and image sizes at the reticule, that would explain why the click values are different.
If your scope has 6.5mm per click at 100m, that's quite a bit different than what they say. 6.94mm is 1/4th MOA at 100m, one MOA equals 2.78cm at 100m.
Regarding the scope with a digicam inside, it would have to take the picture before the bullet's started down the barrel. The barrel points to a different place when the bullet exits the muzzle due to 'jump.' If the picture's taken after the bullet leaves, the reticule won't be where it was when the firing pin struck the primer.