I posted a video here, many years ago, showing the use of a short starter using the short stud to first get the ball and patch into the muzzle, then the long starter shaft to get it 6" down,
then when once almost on the powder, the hole in the starter's knob is placed on the end of the rod and given a smack with the palm, to seat the ball with the correct (the same) amount
of compression each time.
Anyone want to see that one, PM me your e-mail. The picture site used here will not post it from my computer & I no longer have anything to do with photobucket.