Re: which monopod for rear support?
Well, why not look at what the benchresters have already found. The rear of the rifle needs to be able to move in at least two, maybe three, directions when fired. Down, back and twist due to torque (if you believe in it!). They don't lock an "arm" off the rear of the rifle, they place the stock in a slick, powdered-up sandbag which dampens and allows for free movement.
Now you might dampen the the "down" with something like a small shock absorber. But the "Back" and "Twist", with a monopod fixed to the rifle, skipping along the surface? I can't come up with anything here. Fixing that issue would be what Kasey gets paid for! [img]images/icons/wink.gif[/img]
STL. Principal Consultant and Managing Partner - Association of Bifurcated Tangential Ballistic Apologists, LLP.