Is there a relationship between humidity and carbon fouling?

unclecroc

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Joined
Nov 29, 2021
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139
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PA
Just a thought here, I am an avid groundhog hunter in western Pennsylvania. As the summer days have gotten very humid I have noticed the fouling in my barrel go from 30-35 shots per cleaning to 20 shots per cleaning and when I do clean, the barrel has more carbon fouling than it's ever had for that many shots. Is there any merit to the humidity in the air causing a "caking" effect on carbon fouling? My pard also noticed this in his rifle. For details sake we are both shooting 22-250s with h380 powder. My cooper has a Wilson barrel on it and his has a hart barrel.
 
Or is it a correlation between time between shots & barrel temp?
Shot strings of two shots in a minute is a lot for these guns. Usually go 5-20 minutes in between firings. So the rifles never get shot hot really.
 

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