I have a couple of the BR swivel bi-pods with the notched legs. They seem like the cats meow, nice and steady, but I can't hit jack with them. We much prefer bags for extended ranges.
When I was young we could go out and drive through a couple logging units and shoot 25 squirrels a day. We called the activity, "digger shootin." Now we hunt for days just to shoot 2 squirrels. Now we call it, "digger huntin." I much prefer the "shootin" over the "huntin."