i believe it's Ed Brown Custom rifles that does this.anyway they believe in full contact stocks on their web page they claim it allows the rifle to shoot any weight bullet more accurately.
I have been convinced by Melvin Forbes himself. Down to earth guy who builds wonderful guns near Morgantown, WV. For NULA. He showed on on a occilliscope vibrations from a smack on the barrel freefloated And with them not. Also more importantly, was the bedding. You have to use top quality, stiff as possible stocks for this bedding to work. Once you find that and can evenly bed a gun with contact (maybe not 10lb of pressure), it will be a very dynamic gun. And his guns are 5lbs. some of them.
The problem on my remignton 700 stainless/syn is the tupperware stock is just not stiff enough to hold consistent pressure on the barrel, so next best thing is float the barrel, pillar bed the cheap stock, and find a bullet/load combo that won't be affected by barrel whip that much. Or buy a quality McMillian stock, and find someone to bed properly with contact to the barrel.