ORIGINAL: ihuntbuck
would it be better just to leave powder outside in my unheated garage. or keep it in the house and just take it out when i shoot? does the temp humidity change from going in and out hurt the powder???
This is what I do!
Just take enough pre-loads outdoors - not the entire jug. Then keepwhatever preloads not used in a separate container upon returning to the home. Use from the original dry jug the nexttime out- then return the unused preloads again to the separate container again/the next day.... etc...etc. When done with the original jug, revert back to the 2nd container.
Most times afterwards, that 2nd container remnants will shoot identical to the original jug. But what you just done was played it safe -- not allowing "possible' moisture contaminated powder to be re-mixed with the fresh dry powder.