When I moved into this house in 1978, this small bedroom downstairs didn't have a closet, so it became my reloading room. At that time I only had one single stage shotgun reloading press and a Rockchucker press for all of my rifle and pistol reloading. Luckily I thought ahead or just thought big and made my bench the full length of the room's long 11' wall. In the '80s my pistol reloading became more time consuming than I wanted to spend on the Rockchucker, so I added a Dillon 450 progressive press, and now I also do most of my .223 and .308 reloading on it.
My interest in shotgun shooting also grew beyond the output of my single stage reloader, so I added a Pacific 366 12 gauge progressive reloader to my bench. Then when I started competing in registrated Skeet shooting I needed to also reload 20, 28, and .410 shotshells, so I added Hornady 366 progressive reloaders in those gauges to my bench.
I also tried to make my bench stout, so the top of the bench is 2x6s laying flat and running the length of the bench. They are fastened underneath with 2x4s glued and screwed at right angles. The top then has 3/4" HD particle board glued and screwed to the flat 2x6s and that is covered with indoor/outdoor carpet.
There are two shelves of 3/4" HD particle board reinforced with flat 2x4s.
The wall left of the bench has top kitchen cabinets over a lot of shelves.