Rifle- The max Unique load shown for the 100 Grn Metal Cased is 6 grns giving the velocity of 1260 w/22,000 pressure reading.
Pistol-The max Unique load for the 100 grn MC bullet is 5.5 grns at 1065 FPS w/15500 pressure reading.
Thats quite a jump in pressure for only 1/2 gr. of powder.
..... because the rifle had more barrel to develop that pressure in, no?
I surmise that the rifle would develop higher pressure and velocity with the 5.5 grain load, too.