The cartridge for the carbine had less powder, was the case shorter?  Thanks for your answer Hank45

The case was always the same lenght for both loadings.  The Carbine load was at first loaded witha cardboard tube to take up the space and later with wads, similar to how many load wads today.  Those cases incorporated a "C" in  the headstamp.  The finall method of loading was to seat the bullet down on the lesser charge of powder.  No "C" on the headstamp because you could visually tell the difference in the loads.