I am slowly building by reloading shop, and one of the things currently occupying a lot of thinking time is powder storage (and eventually primers). My current thought is to build an insulated rack similar to one for canned foods, where they powder would be loaded at the top and come out the bottom (first in first out style). This way the oldest powder gets used up first and I can very quickly see how much powder I have. The problem is that I really haven't seen anyone else use this type of storage system, not sure if it is because storing it vertically on a shelf works well enough, or is it for some other reason? Such a reason like the bottles are not strong enough to be stacked horizontally on one another?
If I end up going down this route I would probably limit the total vertical height to no more then 30 inches/8# (which ever is less). The racks would be screwed to a drywall wall, possibly with a piece of 5/8 fire rated between the rack and wall for good measure. Each rack would be specific to a brand, so I wouldn't be trying to fit a Hodgon bottle into a rack for Alliant powder.
Anyone with any words of wisdom or experience would be appreciated. I have some time (room is still missing a stud partition wall and 3/4s of the dry wall), in all reality it will probably be a winter project. But I am in Wisconsin and it is the middle of August, so winter will be here before I know it, . The sooner I decide on storage the sooner I can also start coming up with a plan and overall layout of the room.