I bulk process all of my brass (OK not some of it but most of it). This gets it all webs checked, cleaned, de-primed, sized, cleaned again, trimmed and primer pockets cleaned and checked. Them I sort by head stamp and put them in plastic bottles/tubs/boxes. And then I will prime each and put them back in the container with a copy of my check sheet with the primer type listed. These are packed away, well marked as to what they are until I want/need that type of brass for loading. I store these in my garage, split level with heat and air ducts in the garage, but I still keep them off of the concrete. Not any problem in the winter months but in the summer the warm moist air comes in and the cool concrete sweats. I don't want to chance the primers, so they are well off of the floor and fans and dehumidifiers are running all of the time.
How long do I keep brass like this? I think I have some 303 British that has been sitting for 5 or 6 years.
Did this help any?