I am attaching a copy of part of a photo that another member put up recently, with my notes A, B, and C added.  When I use notch B at 100 yards with the ladder folder down, I am on the paper at 100 yards with no other adjustments.  Different bullet weights and loads have all been on the paper with when using that notch.  If you use notch B and are below the paper, try sliding the cross piece A forward (with the ladder down) up the curved ramp C, which will raise notch B and raise the point of impact slightly.

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