One nice thing about seeing mirage through your rifle scope is. . .it's easy to see when the cross winds pick up or drop off a bit. Hold into the wind in a pick up, away in a let off. Many folks do very well in long range matches holding at the left or right edge of the X or 10 ring instead of going out of position to make a few clicks on the windage knob.
Hold on the upwind bullseye's blob center with the mirage (or heat waves) elongating it horizontally downwind. That's where the target is. That downwind shadow of the bullseye is caused by refraction of light coming from it through the heat waves.
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master