Very sensible. But to ease one direction and then come back is odd. And as far as an angled sight goes, that would make sense but for the discrepancy I was seeing, the sight would have to be mounted at least 6” off of the gun to the side for it to do the things it was doing. It was fairly consistent though, and I carried that rifle deer hunting a couple times. Shot a raccoon with it that acted as if it may have been sick, and at 40 yards it hit the raccoon where I wanted it to. I like the thought of the gun, but the one I had was doing something odd it’s like it was kicking the bullet around slightly causing an off center rotation and wierd aerodynamics or something.
Well, there were scopes that were deliberately mounted off-axis like the sniper versions of the M1 Garand. They had to be since the magazine loaded with en bloc clips directly from the top. The guys who used these rifles had two options. Either leave the scope axis parallel to the bore axis, in which case there would be a consistent windage error to the left of point of aim which could be compensated for by holding off to the right. But some chose to zero the scope for POI=POA at some range such as 200 yards. That meant that the rifle shot to the left of POA at shorter ranges such as 100 yards, and to the right of POA at longer ranges like 300 yards.
It doesn't take much sight axis misalignment to produce the result you described, zeroed at 50 yards, off 1" left at 25 yards and 6" right at 100 yards. To hit 6" right at 100 yards requires a little less than 6 minutes of angle misalignment of the bore. That is only one tenth of one degree of misalignment, something that might easily go unnoticed. That same misalignment would result in a windage error of a little less than 1 1/2" at 25 yards. And if your sights were set to hit POI=POA at 50 yards, the windage error from the same misalignment would be to one side at ranges less than the zero, and the other side at ranges greater than the zero.