Reticle library · Athlon
Drawn to scale from Athlon’s own specification sheet, and checked mark by mark by a person. This is the same geometry Harson Ballistics draws your holdover on.
Framed to about 40 MOA — the part of the reticle you aim with. This reticle carries marks out to 58 MOA; the rest sits beyond the edge of this drawing.
Drawn from Athlon Optics’s published specification.
In the second focal plane the subtensions are only true at one magnification — check your manual for which, and dial there before you hold.
Official: valid at 4x on 1-4x24. Text: 2 MOA center dot with 20 MOA illuminated quartered half-circle. Table extracted as A1=0.45 A2=3.5 A3=2 B1=35 B2=3 B3=2 C1=2 C2=2.4 (pdftotext). Primary ring/dot encoded from narrative; remaining hold letters incomplete pending a cleaner table read.
Verified 16 Sep 2026 against page 3 of Athlon's own ATMR6 SFP IR MOA reticle manual (Talos BTR GEN2 1-4x24), read as vector rectangles with tools/pdf_vectors.py and rebuilt by tools/build_athlon_atmr6.py. SFP - subtensions valid at 4x. Scale 1.722 pt/MOA, confirmed three ways before anything else was trusted: the centre dot measures exactly 2.00 MOA against the published D1 and Athlon's prose '2 moa center dot'; the post measures 3.50 thick against published A2 3.5; and the fine bar 0.45 against published A1 0.45. The windage ticks then land on 4, 6, 8 and 10 without being asked to. A plain 1-MOA-grid fit returns 3.4440 - exactly double - because the ticks sit on even MOA only; the three figures above break that tie, and it is the same half-scale alias the APLR2 sheet has. STRUCTURE: a 2 MOA illuminated centre dot inside a 20 MOA quartered half circle; vertical windage bars at 4, 6 and 8 MOA standing 2 MOA tall and at 10 MOA standing 3 MOA tall, with horizontal segments 2 long at 3 and 9 and 4 long at 6; black posts 35 MOA long (published B1, measured 34.95) starting at 23 on the windage axis and about 17 below. DROPLINE TREE, and the C-series maps to it exactly: bars at 2.4, 5.6, 9.5 and 14.6 MOA below centre (published C2, C3, C4, C5; measured 2.39, 5.59, 9.49, 14.58) with widths 2.8, 3.9, 5.4 and 6.8 (published C9, C10, C11, C12; measured 2.90, 3.89, 5.39, 6.79), plus three 1.0 wide marks between them. ⚠️ The sheet carries a second magnified inset in its lower right; its geometry lies beyond y +34 and x +23 in reticle units and must be excluded or it corrupts the measurement.
Harson Ballistics draws this reticle at your magnification with your holdover marked on it, from your rifle, load and conditions. Works with no signal and no account.
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 Athlon.