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Old 10th March 2013, 09:28 PM
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RobF RobF is offline
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Join Date: Mar 2010
Member of: Southampton Buccaneers, Parkstone, South Dorset
Location: Poole, Dorset
Posts: 10,165
Default Over and under ranging in temperature?

Just doing a little research to see if the main trend works with a theory of mine.

Those that see definite scope shift (and not the gun changing power or bending in temp), can I ask what happens to your scope in rising temp and which way the wheel turns.

Ill make it easy. The march seems to underange in higher temps and over range in lower. Ie in high temps a 55 target will read say 52. In low a 55 may range at 58. The wheel turns so that if 55 yds is on the pointer then 45 yd line will be above it on the wheel. Does that make sense?

Interested to see if there is a correlation in wheel direction and shift direction. If there is then I might have a theory to look at something in closer detail. Doubt it will be curable but it might be testable if I can persuade a scope maker to try something.
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