Originally Posted by blackscale
True but it is better to be as close to centre as possible because once you get really blurred targets mixed in with being forced into some nasty positions it can be enough to put you out...especially if you mis-range the target....
But if the target is blurred how can he tell he is out by 2mm or 3mm?
The only way to be that precise is to alter the scope parallax to the correct distance when testing and that would defeat the object.
A few mm at close targets is nothing - at least it is predictable (unlike the wind on longer targets)