I now have two of these collimators and a number of firearms to test them on. Most manufacturers are a little lazy about where they place the grid. A sighted-in rifle will show the rifle's aiming point right in the middle of these Bushnell collimators' grids, or perhaps a tiny bit low or high depending on the rifle and how far out to the point where the bullet path crosses the line of sight. None of this counting three squares over and four steps up as with some other brands. This evidences care in manufacturing these Bushnell collimators.