I do not know the dimensions of the Fiocchi .32 Short Corto. It is possible that it is really the .32 S&W by a different name. I suppose Fiocchi product information would clarify exactly what it is. .32 S&W will not interchange with the .32 Short Colt. The European .320 Short (Webley) cartridge is interchangeable with the .32 Short Colt, so it is possible that the Fiocchi .32 Corto cartridge is the same as the .320 Webley, and therefore is interchangeable with the .32 Short Colt.