The heavier contoured barrels seem to be easier to get to shoot. Floating the barrel can help. The angled forend screw can be an issue, especially with light barrels. It is possible to bed the forend with a three point bedding setup. Then remove wood from the rear of the forend where it contacts the action. Jon Sandra wrote an article on this procedure way back in the 70s. I did it on a Number 3 and it stopped the vertical stringing.
