Re: which monopod for rear support?
No problem. My pleasure...
I attribute control of vertical dispersion to control and consistent response in the rear of the rifle. Vibration needs to be damped IMO. For me, that happens with a pliable material under the butt of the rifle, with a pliable material (me) behind and on top of it - holding on with a "controlled death grip", of course.
The bipod can of course be removed. I only fire the rifle from a bipod because I am interested in developing consistent shooting systems that work wherever I take them. For me, that includes my rifle club with concrete benches and the field with dirt and rocks. The whole system must be developed for both environments, and I won't carry a benchrest into the field.
STL. Principal Consultant and Managing Partner - Association of Bifurcated Tangential Ballistic Apologists, LLP.