Been shooting 300 yards for few years,been working on a few loads to shoot 600 this summer.so today I was doing some rimfire out in the swamp lands and decided to put up a 12 inch target and back way up.when I got to were I could barely see the target I set up my gun with a 5x27 scope and then ranged it through the scope to be 575 yards.but what I saw was wild it was just a gasification of dancing beams,a mirage,how the hell do you shoot into that.are all days like this,with such a crazy mirage.i don't even know if the target was were I was looking.and if I was even able to range it correctly.there were water streams in the area and i don't know if that made things worse,but goin find out i guess.