Re: barrel channel clearance/fliers?
I use bipods in the field for long range prone shooting, the targets are prairie dogs. Works well.
Bipods from a shooting bench, or other hard surface, seem to give me fits and my groups always open up.
While I agree that free floating barrels is the easist way to get good accuracy, I have a couple of rifles that are fully bedded and shoot extremely well. They were both done by a custom 'smith, Dale Storey of DGS. The stocks are by McMillan.