This seems to be true for all makers except AGS.
This page assumes that a jackpot is equally likely to trigger anywhere between the starting value and must-hit-by maximum. If you're interested in must-hit-by progressives on Ainsworth slots, please see my separate page on that.
This page will examine these 'target points' on some new slots by WMS with mystery jackpots. There are two good things about a large jackpot:
