16 inches of slope in 40 yards is a deviation of about 3/8" in 30" barrels which I would think would be easy to see looking at the barrels. I mean that centerline of the muzzle end of the barrels is 3/8" wider apart than the breech end centerline. Even an old Californian that liked Labradors could see it.
I got into a long and disagreeable discussion of this problem of non-matching POIs over on 16gauge.com. Once on a gun built by ROTA and once on a B. Rizzini. I believe you can peer down the barrels all you want to but the only way to tell where it is going to impact for you is to shoot it off hand at a pattern board.
Earlier in this thread Chuck pointed out the theory on side by sides was that the converging barrels effect on POI would be offset by the assymetrical recoil of the barrels. If the barrels on an 0/U were parallel the recoil on the top barrel would cause it to shoot higher than the lower barrel using the same reasoning. The moment arm to the shoulder anchor is longer on the top barrel than the bottom barrel.
And if Andre the Giant shot the gun I believe he would get different POIs because his hand is much heavier than Don's. This difference along with Andre's heavier shoulder mass would change the dynamics.
I do believe Don's barrels are defective though. What do you get when you cross an elephant with a rhino? Elephino!
Best,
Mike
Last edited by AmarilloMike; 07/16/08 05:07 PM.