This is how i see it...as for revolver rounds go, their cases are rimmed.so any length shell or bullet can be used as long as it is the correct caliber and the total length will fit into the cylinder.
Edit: For example-- A .22 revolver can be loaded with .22 short,.22 long or .22lr.
And a .357 magnum can also be loaded with the shorter 38 rounds
The un-rimmed auto casings require a certain headspace.
Example: Putting a 9x18 into a 9x19 chamber will allow the round excessive movement between the breech face and the chamber.you may not even get a primer strike.Or it could be very dangerous if you do.(not completely containing the pressure)
The 357 sig is a necked down 40 s&w ...kinda like the 400 corbon is a necked down 45acp.
But...I am just a novice at this stuff.I'm sure a pro will answer with much better,more accurate information.