I think the Sack Up is a great Idea Diesel! I have a few spares hanging around as I keep all my long guns in individual Sack Ups when in the safe. I put a wide masking tape on the Sack Up with the name of the gun and caliber so I can quickly find the rifle.
I will have to pin up a pillow case and take an existing sack up to a seamstress friend of ours (my wife does not sew so swell
) and see if she can convert a sack up into a Star Sack.
This should be rather interesting to explain what I need this for... Oh Yah...
As for the plastic bags as a cover. That may be a good idea in areas where the humidity is low. But here in Connecticut or anywhere along the coast or in river valleys, the humidity could become trapped inside the plastic bag and this would probably not be a wonderful thing.
As one other tip, I always keep a can of DUST OFF handy with my Stars. Dust Off is a can of compressed air. A few blasts of Dust Off with a finger over the case in the powder station keeps the shell plate area nice and clean during reloading sessions. Warning though. Long Blasts of Dust Off make the metal quite cold and can cause condensation due to the cold.
Art