I drew these up years ago and still use them to this day.
I have found that a hollow square rotated 90deg is the easiest to hold your reticle on, and something other than black to that it contrasts to the black reticle.
When printed on A4:
Grid is 1/2"
Small squares - 1" outside, 1/2" inside
Large squares - 2" outside, 1" inside
Last two targets are calibrated in 1/2" grid for working out your drop at whatever range you decide to shoot at.
NT - Square Sighting Targets.pdf
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