Re: Reloading in the garage....temperature changes
One area to consider is condensation of moisture on the container and powder.
If moving powder from cold (fridge) to loading bench, make sure that container is well sealed until powder/container warms to room temp. Cardboard containers are going to degrade if this is done often.
If loading in the cold watch for conensation on the brass, and scale. Moisture is not a friend to powder.