I seem to remember one like that years ago, called the Medusa. Even read a test on it somewhere. The way they get all the calibers is count some kinda over again. I have shot .38 supers from a .357 magnum, just to shoot 'em up.
That is a neat concept, but I'd hate to buy all the reloading dies for it!

yup. 9mm Browning Short, 380acp, 9mm Kurz and if I remember correctly, 9mm Corto, 38 auto and 380 revolver are all the same or at least interchangable rounds.

In addition, 9mm Luger, 9mm Parabellum and 9mm export are interchangeable as well IIRC.

38 Short Colt and 38 Long Colt (38 Colt Super) can be fired in any 38 spl so those are interchangeable.

38 Colt Special and 38 Mid-Range can be used in any 38spl.

Any of them can be used in a 357 (although some may require moon clips). So the only strange one is the 38S&W family (38S&W, 38 Colt New Police and 380 Webley) that have a slightly larger diameter than the others. They can be fired in any 38spl but the empty cases will be a bear to get out do to expansion.

The .38 mid range, .38 +P AND .38 +P+, now thats handy! Yes the .380 ACP, .380 auto, .380 Kurz, .380 Corto...same same. I never heard of a ".380 revolver"...now I gotta get one! .38 ACP and .38 Super are the same exact size, except for loading. I really don't think the .38 S&W will fit it, if the memory serves me, as it is a larger diameter. SIG! ya got me by 2 minutes! My Ruger MKII shoots CB caps, BB caps, standard velocity, high velocity, stingers, match, shot capsules...you get the idea.

What a gimmick.  I remember the Medusa from the last go around.  After you get through with all of the rounds that are actually the same and eliminate those you will never encounter, what is the point.  Whatever floats your boat.  Watch-Six