[nuke99]

The changes in direction and the amount thrust increases the pressure. Hitting pressure feels heavy. I don't think your way of explanation will differs hitting or swinging.

The correct grip is very important in PP. Maintaining RHYTHM and LAG is how pressure points are maintained. By maintaining Rhythm, you will not overaccelerate, the only reason to lose LAG and steady pressure.

Why the impact is better? PP also connects the swing. the pressure acts on the shaft . Now if we try with a little more extensor action the compression again increases.