I went with a number 3 contour on my build, wish I would have went lighter.....
I think that is how we learn, or we can learn from others mistakes. I know BobinNH used to run skinny tubes and be perfectly content with them. I don't buy into the barrel heavy aspect of things, as I've shot a whole hell of a lot of offhand and don't prefer a long heavy barrel for this position or any other field position, unless the rifle is being supported by a good rest. For a packing around and using rifle, the rifle needs to be balanced and feel right in the hands, not trying to weigh me down as I pull the trigger....
Where I like the fulcrum is right at the front action screw: