Okay, background. I have traditionally not shot off barricades much. Take the opinion (and some training) that you maneuver to get the best shot, so it hasn't really come up formally to me. Barricade work has been concealment, cover, and short range shots.
So, for precision rifle, I can do 100 yard shots all day from anything (marginal at unsupported, but I could work on it), and otherwise do bipod or pack or so on. And do well at it.
But at least for gaming— and maybe it's a useful skill anyway — how do you shoot off barricades for longer ranges, or more precision? I have done poorly at a few carbine matches where barricades are the norm, and I now have access to a bunch at the PRS-oriented range I've joined, but every tutorial or video I've seen makes a lot of assumptions, a lot of "just lookie here, see?!" and doesn't give the basics of it in the way I've been instructed for things like how to employ a bipod.
E.g. loading the bipod is a technique, but until I understood that, or bounce or, recoil management with the rear bag, or ... so on and on, I sorta sucked at bipod use. I assume I am missing some key methods for barricade work, so would love your resources to start me off.