I'm not a fan of any bipod that is to rigid, the standard Harris has to much hop for me, particularly off of a hard surface. I documented a full 1moa POI change between shooting off the dirt and shooting off concrete.

I use the 6-9", notched with tilt and pivot. I find that if I am behind the rifle correctly the rifle will rock and basically reset on target. I can typically call my own impacts once I get past 300yds. if that bipod is not tall enough I transition to my trekking poles since they are always with me.

Hunt hard, kill clean, waste nothing and offer no apologies.

"In rifle work, group size is of some interest...but it is well to remember that a rifleman does not shoot groups, he shoots shots." Jeff Cooper