Gunsight 109 propositions

[swiss]

You can't really tell from the pic.

But basically you got two options:

A) Keep the line-of-sight parallel to axis of symmetry , you'll end up with an error but at least it stays the same over all distances.

B) they intersect at a given distance: Deviation decreases to the point of intersection(?), from there on increases again, plus it shifts to the other side.

I would say B is worse.