It might be old news here, but I just discovered this page:
It's a list of case dimensions - nominal caliber, rimmed/rimless, base and rim diameters, etc. I've seen others, but this is the most complete, and unlike some of the web sites that dole out dimensions one cartridge per page, this is a simple chart with everything laid out and easy to view.
Now, can anyone tell me what a "Balistek code" is? Is this like a DWM case number? google keeps returning hits Honda car mods...