Sorry, I didn't make myself clear - I know there is a simple relationship for a second order filter, but not for a higher order filters. I was just giving an example of a filter which contains a second order section with a Q of 1.4, but that the overall filter step response only has 0.12% overshoot.Tesla23....there is aformulawhich gives you theovershoot as a function of Qp:

Overshoot "gamma" (in %)=100*exp[-Pi/SQRT(4Qp²-1)]