Most swamped barrels today have been well thought out as to barrel dimentions at the muzzle to be close to the same size as the dim. at about 12" from the breech, and the sights are easier to dial in, as well as to see...But I still am questioning some things...I have a copy of the barrel used on an early Va rifle that I personally took off the dimentions, and the muzzle is considerably smaller than the rear sight area , from my knowledge of sights, it should shoot high. When I sight a rifle in, I use 25 yards as a point of reference. Most deer here in Ohio are shot at about 35-75 yards, and I think back in the day, most shots were in that same neighborhood...Out west is a different story. I have always felt a bit "in the dark" when it came to understanding sights, but I have always made sights with the front sight "high" and filled it down when sighting in. I try for a rear sight between .150-.180, and the front as needed, and never end up with a front blade very low....Just my observation.