ORIGINAL: cayugad
On my first test I am positive that the extreme temps and humidity did my rifles in . On the second phase of the test were the temperatures were more constant and the humidity was not as bad . . .
I think the humidity is very important. Out West, where the humidity is usually low, we should have less problems with charges getting moist from temperature variations. I would think when and where a rifle is loaded makes a difference as well. For example, if the rifle is loaded outside in conditions where the temp of the air is below dewpoint, I would think the load could stand more variation in temp. The worst would be if one heats his home with catylitic heaters or wood burning stove and loads in the warm house where humidity has a dew point way above the outside temps.