A couple of days ago I tested some loads using IMR8028XBR and recorded the velocities. The temperature at the time was in the mid 90's but the humidity wasn't too high. When I tried to repeat the test to-day using the same components I found that the velocities were 100fps slower. The temperature was almost twenty degrees cooler but the humidity was very high and my glasses kept fogging up. Since this powder is supposed to temperature stable I was wondering if the humidity had something to do with it.