The 99 cent plastic shoe boxes at Wal-Mart, Home Depot are exactly the right size for the plastic 50 rd. large handgun shell holder that comes in the box of pistol ammo. The shell holders manage most rifle brass. 50 holes, so two holders adds up to one pack of primers, one box of bullets.
Then the 99 cent "shoe box" holds 200 rds of ammo in shell holders. And they stack up! You can see what's in them.
They also come in handy for components, bullets, lube pads, primers, etc. They stack, and "nest" for storage, are cheap, cheap, cheap, and sturdy too.
Out on the bench you have your ammo in 50 rd. "blocks" -- brass goes in another "block" and back in the box. Easy to keep count, organize.
-------------------------------------------------------------------
I bolted my press and powder measure to a 2" X 12" and secure it to the bench with large C clamps. Because sometimes I need a clear bench, and sometimes I need a press / powder measure.
--------------------------------------------------------------------
OK, and for accurate loading, Varmint Al's page just about covers it all:
http://www.varmintal.com/arelo.htm