The Smith ladder sight has no windage adjustment, IIRC with the correct front sight (.404" 17A), the buckhorn is on at 100yds, but I couldn't tell ya, it won't work for me as it's too close to my old eyes to work in that mode and mine came with a notch slider which Smith finally replaced for me, but I haven't used it on my 45-120 BC since. Use the search for dodd3's posts on the Smith sight, he's used it extensively for long range shooting, there are other posts on it too, seems to me Haywire Haywood also has done some shooting with it.
Tim