I'm shooting in a 800,900 & 1,000 yard match this sat and sun and the weather is calling for 92 & 99 temps with humidity around 46-49% and 2-5 mpg winds....my question is, is mirage a product of heat, or the sun? I'm basically asking with conditions like this is there def gonna be very heavy mirage? PS this is about 20 degree's above our average temps here in upstate NY.
mirage?
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JMayo
Silver $$ Contributor
Heat from Sun. Just like the heat waves off a car hood.
I turn the scope down sometime. Sometime I watch the target center as it simmers and try to figure where it really is. I also watch which way they waves are moving for wind speed/direction.
Pray for good groups she let the score be what it is ! POA, POA,POA !
I turn the scope down sometime. Sometime I watch the target center as it simmers and try to figure where it really is. I also watch which way they waves are moving for wind speed/direction.
Pray for good groups she let the score be what it is ! POA, POA,POA !
CharlieNC
Gold $$ Contributor
Mirage at our range is just as bad on a clear winter day as the sun heats exposed clay soil and sends those heat waves up. Not nearly as bad over grass. Be very observant during your first shots in order to get a reading on how its affecting the shots, and compensate from there. Screwy things continue to evolve and violate what you think you have learned, so stay flexible as well.
Can't answer your question.
What is this long range match in NY that I don't know about?!?
Its at the Forbes club in Albany NY, check out there website
I think you should just go fishing and forget about shooting this weekend!!! (that way I have a better chance of winning) 
HAHA...you shooting that new BRA?I think you should just go fishing and forget about shooting this weekend!!! (that way I have a better chance of winning)
butchlambert
Site $$ Sponsor
Where is the mirage? Close to you,middle of the yardage?? How do you know where it happens to be?I've seen the mirage run one way and the flags another. I'm just not a mirage reader.My youngest Son won his first place trophy at 200yds at Tomball several years ago. I asked him what he was seeing.He said the air looked like a river. He said,"Dad, I pulled the trigger when the waves were the same height and speed". I wish he lived close enough to shoot with us again.
I should be getting it in the mail tomorrow. So I 'll stick with the .284. I had the 6bra built for mid range and now we're not doing the 300s. I need a little time for break in and load development any way. See you this weekend.
I believe there is actually two types of mirage, if I remember correctly it is touched on in the Sniper manual FM 23-10
j
Both. The sun heats up the air.
Some layers of air are at different temperatures. Light ray's directions are bent when they go from one temperature air to a different temperature. Exactly the same as light rays direction changes as it enters glass surfaces at an angle. Warm air is less dense than cool air. Glass is more dense than air, lenses bend light rays entering them.
If a cross wind tends to slightly wiggle the target horizontally, the middle of the largest, upwind fuzzy blob of the target image is about where the actual target is. There will be "slices" of the downwind target image that get wider and narrower as subtle wind speeds change.
Two types are explained here....
https://www.eoas.ubc.ca/courses/ats...0-met-local-conditions/10f-optical-phenomena/
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Exactly.
Saw this quite plainly at Midwest Palma (when the sun chose to shine upon us) but even more clearly Sunday when it was sunny & hot.
Smart fellow.
I was watching that ‘river’ flow across and down the range all day long, rippling at every change in elevation.
(Of which the range at Winnequah has many.)
Moving focus on my spotting scope for different yardlines between line & targets, it was easy to see two, frequently three, sometimes four different directions & intensities occurring simultaneously.
Shooting match sights almost helps to deal with it; one doesn’t see the mirage thru the sights often, though there have been times....
PS, you shouldn't have unloaded that K1050.
Cuts mirage like nothing else.
Cuts mirage like nothing else.
Dusty Stevens
Shiner
The absolute worst mirage there is just happens to be over freshly cut moist grass. I guess its the evaporation. 110deg sand in the high noon desert sun has nothing on grass mirage when the humidity is high
Yes indeed. Moisture cools the air as it evaporates and makes it even more dense. Light ray's refract (bend) more going into such mediums.
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