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Typical elevation shift due to mirage and sun


furrybean

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Ive heard the phrase "lights up sights up", or "lights up strikes up" but what real world values have you equated this too?

 

I was looking at a plot from the other week and I was getting a MOA shift approx due to both mirage and sun.

 

In the past Ive normally dropped to the bottom of the V to compensate and its been okay but not had this magnitude of shift before.

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The 'lights up - sights up' refers to distance judgement. On a bright, clear sunny day you can see more - so things look nearer - but they ain't - so 'sights up'.

 

It's an old military thing but obviously doesn't apply to optical sights.

 

Mirage is a totally different thing and can easily shift the image a half MOA at 100 yds - I've experienced this when shooting benchrest in hot countries. Set your crosshair on the bull - wait for the condition - only to find your crosshair is now well above the bull!

 

I hate mirage.

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  • 3 months later...

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