Re: Bi-Pod length
I run a Harris 6-9 during the non hunting months, the 6 is not too high for the bench, with a higher pod you find yourself trying to balance the rifle with bags and it just gets frustrating. The 9 is plenty for shooting prone at steel and targets. The 9 is not so high that you strain your neck and upper body getting to the scope, with a 13 you get get a few rounds off but after a while you will feel the burn.
For hunting , I have a versapod with a 7" and 9-"12 that I can swap out simply by the push of a button. 7" for sight in and last minute work ups, the other for field use. Pull it off and tuck the pod in my pocket, so its not snagging everything and tearing into my back.