The gun is moving before the bullet leaves the barrel. Different holds/grips will get different impact points.
I too, would expect two different, accurate shooters to hit two different places on the target using the same sight picture.
On the card, are you sure anticipating recoil results in high/right hits? I thought that would manifest itself in pushing the gun down resulting in low hits.
Proud member of the NRA and Texas State Rifle Association. Registered and active voter.