The slower the projectile is driven, the more the projectile is affected by recoil, providing there is enough recoil to move the gun.
Slow motion video of a high velocity gun, will show the projectile exiting the muzzle before the gun has a chance to move. This is
quite obvious with the higher vel. elephant rifles.
The harder a gun is held down, as when bench shooting, but holding the forend, resting the back of the forward hand on a bag,
compared to shooting off a rest without holding the forend, the shot without holding will strike higher than when the gun is held.
This shot is recoil induced by the gun not being held for that split second. I have one rifle that the difference is 3 1/2" at 100 meters.
It kicks a bit.
Thus, final sighting should be done in the manner of most of your shooting style. I find that shooting from a bench and holding the forend
with the back of the front hand on a bag, gives the same POI as shooting offhand.