Wind ?

[bruce moulds]

mirage can tell lies.
sighter shots can tell you what is going on there.
more than once I have seen mirage going left to right, and bullets deflect right to left.
it helps to change focus on the scope and look at the mirage over the whole range.
winding the sight is necessary.
it is not unusual to have to make a 14 or so point change if direction and strength alter together.
much wind at all and minimum 3 point changes are often required.
always knowing what is on the sight is a must.
this helps you go back to a condition previously proven to be correct.
keep safe,
bruce.