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Reticle library · Nightforce

Nightforce FC-DM (ATACR 1-8x24 F1)

Drawn to scale from Nightforce’s own specification sheet, and checked mark by mark by a person. This is the same geometry Harson Ballistics draws your holdover on.

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Nightforce FC-DM (ATACR 1-8x24 F1) — first focal plane, MRAD subtensions, 1–8×

Framed to about 12 MRAD — the part of the reticle you aim with. This reticle carries marks out to 26.8 MRAD; the rest sits beyond the edge of this drawing.

Drawn from Nightforce Optics, Inc.’s published specification.

The numbers

Manufacturer
Nightforce
Reticle
FC-DM (ATACR 1-8x24 F1)
Focal plane
first focal plane
Units
MRAD
Magnification
1–8×

In the first focal plane the subtensions hold true at every magnification, so a hold is a hold wherever the zoom ring sits.

Subtensions

Nightforce FC-DM reticle sheet (NFO_FC-DM_20171206-COMM-v4_1, 12/17) page 2, MRAD, first focal plane: A=.35 illuminated centre dot, B=2 segmented circle (four illuminated arcs 0.65-1 from centre, 15 degrees clear of each axis), C=10 horizontal scale, D=1 dot spacing, E=5 half-width of the dot grid, F=2 heavy bars, G=.06 lines, H=1 / I=.5 mark pitches. No line above centre; lines start 0.5 from centre; vertical to -10. Marks: +/-1 .5 long, half mils .2, whole mils 1.0 (all centred). Dot grid (rows below centre, mil: half-width): 1: +/-1..2; 2: +/-1..2; 3: +/-1..3; 4: +/-1..4; 5: +/-1..5; 6: +/-1..5; 7: +/-1..5; 8: +/-1..5; 9: +/-1..5; 10: +/-1..5; dots 0.2 (measured). Heavy bars taper from 6 to full width at 15.1 (sides) and 11 to 20 (bottom) and END at 26.8 mil, measured on the sheet's 1x view (they stop inside the field at low power); the white 10/15 and 15/20 numerals printed on the bars are not drawn (the app paints labels in the reticle colour).

How this one was checked

Verified 9 Oct 2026 against Nightforce NFO_FC-DM_20171206-COMM-v4_1.pdf page 2 (8x drawing), read as VECTOR at 7.352 pt/mil: C=10 and F=2 reproduce to 1%, the A dot measures .35, the ring's outer diameter 2.00 (B), the drawn line .06 (G); every mark sits on the .5 mil pitch (worst 0.027) and every grid dot on the 1 mil lattice (D) out to 5 (E). Ring thickness, arc gaps, dot size, bar tips and the row-by-row dot extents are measured from the to-scale vectors (unpublished). Cross-checked by overlay. All nine letters represented.

Subtensions are published by the manufacturer and reproduced here for reference. Confirm your own dope on a range before you rely on any of it. Harson.ai is not affiliated with Nightforce.