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Old 2nd December 2009, 08:23 AM
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Scooby Scooby is offline
Pete Dutton
Join Date: Nov 2008
Location: Rotherham
Posts: 2,646

Originally Posted by Ripleysniper View Post
After shooting in the last four winter league in the FFTA I have notice that when there was a frost or it was just very cold the POI always dropped by at least 6 clicks, some old boy explained this to me, weather he was right or not his suggestion was that in colder whether the air is denser and when hot or warm the air is a bit thinner.???
As the weather has turned for the worse I had to adjust my zero up by 4 x1/8" clicks on Sunday even though the rifle was running at the same consistent velocity (780fps), I've had to do this ever year with all my rifles, I then take them back off in the spring when it warms up.
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