Yes , some O/Us have spacers between the muzzles for this reason as with a higher ribs .Some tests I did showed that a B25 for example shot high on the bottom barrel but flat with the top as did several other modern production guns , so fitting a higher rib split the difference so to speak . Shoot solid slugs and see, a friend did , hit the mark top but shot over the top with the bottom
Side by sides will shoot on average , Right , high and left of centre at 25yards the opposite with the left . Its the nature of the gun . To those who argue that the barrel noses/muzzle's are altered so as to make a gun shoot to "point of aim " how do you do that to a gun with brazed ribs ?
No body ever sat down and worked it out. Barrel making just continued in progression from the first double flint locks , I doubt Messer Purdey , Smith , Fox or Greener even gave it a thought .
Last edited by gunman; 05/04/14 11:57 AM.
