All else being equal, a smaller bore master cylinder will yield a longer/lighter pedal travel with increased clamping force at the calipers.

For example, the pedal is lighter with a 15/16" master cylinder compared to a 1 1/32" master cylinder. The pedal is lighter with a 1 1/32" master cylinder compared to a 1 1/8" master cylinder.

All 3 bore sizes were used with OEM Mopar brake applications over the years.