Technically its a smaller caliber...
The 7.62x25 shoots a smaller, lighter bullet at higher velocities - 30cal 85-90gr bullets at 1500fps, vs 115-124gr at 1150fps, give or take. The differences in weight and velocity lead to differences in the way the recoil is felt by the shooter.
I always thought the 7.65x25 would be a fantastic short range small game cartridge if a reasonably accurate little rifle was made to go with it...